PrHybridSeeding - Issues in DD4HEP builds

See discussion in #370 (comment 5875097)

PrHybridSeeding is giving very different results between Detdesc and dd4hep.

DetDesc

PrHybridSeeding                        INFO Number of counters : 21
 |    Counter                                      |     #     |    sum     | mean/eff^* | rms/err^*  |     min     |     max     |
 | "Created T2x1 three-hit combinations in case 0" |    130424 |      78183 |    0.59945 |    0.60972 |       0.0000 |      6.0000 |
 | "Created T2x1 three-hit combinations in case 1" |    201837 |     131353 |    0.65079 |    0.71665 |       0.0000 |      10.000 |
 | "Created T2x1 three-hit combinations in case 2" |    381682 |     301339 |    0.78950 |    0.95432 |       0.0000 |      20.000 |
 | "Created XZ tracks (part 0)"                    |       219 |      11325 |     51.712 |     47.114 |      1.0000 |      405.00 |
 | "Created XZ tracks (part 1)"                    |       219 |      11147 |     50.900 |     38.520 |      4.0000 |      209.00 |
 | "Created XZ tracks in case 0"                   |       146 |       7120 |     48.767 |     29.595 |      3.0000 |      158.00 |
 | "Created XZ tracks in case 1"                   |       146 |       8434 |     57.767 |     42.520 |      6.0000 |      308.00 |
 | "Created XZ tracks in case 2"                   |       146 |       6918 |     47.384 |     52.995 |      1.0000 |      405.00 |
 | "Created full hit combinations in case 0"       |     10758 |      10758 |     1.0000 |      0.0000 |      1.0000 |      1.0000 |
 | "Created full hit combinations in case 1"       |      9873 |       9873 |     1.0000 |      0.0000 |      1.0000 |      1.0000 |
 | "Created full hit combinations in case 2"       |     10648 |      10648 |     1.0000 |      0.0000 |      1.0000 |      1.0000 |
 | "Created seed tracks"                           |       146 |       7732 |     52.959 |     20.279 |      15.000 |      101.00 |
 | "Created seed tracks (part 0)"                  |        73 |       4438 |     60.795 |     24.073 |      15.000 |      115.00 |
 | "Created seed tracks (part 1)"                  |        73 |       4239 |     58.068 |     22.743 |      17.000 |      123.00 |
 | "Created seed tracks in case 0"                 |       146 |       3874 |     26.534 |     11.351 |      3.0000 |      58.000 |
 | "Created seed tracks in case 1"                 |       146 |       7300 |     50.000 |     19.562 |      13.000 |      102.00 |
 | "Created seed tracks in case 2"                 |       146 |       8222 |     56.315 |     22.243 |      15.000 |      114.00 |
 | "Created seed tracks in recovery step"          |        73 |        455 |     6.2329 |     4.1727 |       0.0000 |      20.000 |
 | "Created two-hit combinations in case 0"        |     25034 |     560295 |     22.381 |     13.668 |       0.0000 |      88.000 |
 | "Created two-hit combinations in case 1"        |     22752 |     735783 |     32.339 |     16.713 |       0.0000 |      120.00 |
 | "Created two-hit combinations in case 2"        |     19255 |    1000491 |     51.960 |     26.627 |      3.0000 |      166.00 |

DD4HEP

PrHybridSeeding                        INFO Number of counters : 15
 |    Counter                                      |     #     |    sum     | mean/eff^* | rms/err^*  |     min     |     max     |
 | "Created XZ tracks (part 0)"                    |       219 |          0 |      0.0000 |      0.0000 |       0.0000 |       0.0000 |
 | "Created XZ tracks (part 1)"                    |       219 |          0 |      0.0000 |      0.0000 |       0.0000 |       0.0000 |
 | "Created XZ tracks in case 0"                   |       146 |          0 |      0.0000 |      0.0000 |       0.0000 |       0.0000 |
 | "Created XZ tracks in case 1"                   |       146 |          0 |      0.0000 |      0.0000 |       0.0000 |       0.0000 |
 | "Created XZ tracks in case 2"                   |       146 |          0 |      0.0000 |      0.0000 |       0.0000 |       0.0000 |
 | "Created seed tracks"                           |       146 |          0 |      0.0000 |      0.0000 |       0.0000 |       0.0000 |
 | "Created seed tracks (part 0)"                  |        73 |          0 |      0.0000 |      0.0000 |       0.0000 |       0.0000 |
 | "Created seed tracks (part 1)"                  |        73 |          0 |      0.0000 |      0.0000 |       0.0000 |       0.0000 |
 | "Created seed tracks in case 0"                 |       146 |          0 |      0.0000 |      0.0000 |       0.0000 |       0.0000 |
 | "Created seed tracks in case 1"                 |       146 |          0 |      0.0000 |      0.0000 |       0.0000 |       0.0000 |
 | "Created seed tracks in case 2"                 |       146 |          0 |      0.0000 |      0.0000 |       0.0000 |       0.0000 |
 | "Created seed tracks in recovery step"          |        73 |          0 |      0.0000 |      0.0000 |       0.0000 |       0.0000 |
 | "Created two-hit combinations in case 0"        |     25034 |          0 |      0.0000 |      0.0000 |       0.0000 |       0.0000 |
 | "Created two-hit combinations in case 1"        |     25891 |          0 |      0.0000 |      0.0000 |       0.0000 |       0.0000 |
 | "Created two-hit combinations in case 2"        |     25034 |          0 |      0.0000 |      0.0000 |       0.0000 |       0.0000 |

https://lhcb-nightlies.web.cern.ch/nightly/lhcb-dd4hep/1218/Moore/x86_64_v2-centos7-gcc11-opt/tests#RecoConf.hlt2_light_reco_pr_kf_without_UT_RICH_Calo_Muon_with_mcchecking

https://lhcb-nightlies.web.cern.ch/nightly/lhcb-dd4hep/1218/Moore/x86_64_v2-centos7-gcc11+dd4hep-dbg/tests#RecoConf.hlt2_light_reco_pr_kf_without_UT_RICH_Calo_Muon_with_mcchecking

Likely related to known issues with FT, but we need the maintainer of PrHybridSeeding to dig in to confirm what exactly is leading to the differences in the two builds.

@lohenry @decianm FYI Can you assign to the maintainer of this alg ?