[ATLIDTRKCP-260] Further tune track finder

Following !37215 (merged), we have a new set of tuning parameters available for the track finder.

In this MR, I update their value to speed up the track finding by around 7% (3% ambi and overall tracking), with a 4% fake rate reduction and no discernible impact on track reconstruction physics performance. The fake reduction means numerical changes are expected.

The implementation of this tuning is done at a level that ensures only the inside-out pass of primary tracking is affected, since I do not wish to affect other clients. But @mdanning et al might want to give this a try for LRT as well.

https://its.cern.ch/jira/browse/ATLIDTRKCP-260 documents the performance checks in more detail, including dense jets, conversions, and inclusive ttbar.

Adding @sroe, @npetters as usual suspects and @amete for information in case this shows in SPOT. Also adding @gavrilen for information as expert & original author of the seeder.