tauRecTools: retrieve the orignal cluster only when jet performs vertex correction (ATLASRECTS-5763)
In TauClusterFinder, we retrieve the orignal cluster via a decorated link. However, if there is no vertex correction in jet reconstruction, then the returned original cluster will be nullptr, which result in a crash.
To fix this, we retrieve the orignal cluster only when jet performs vertex correction.
In addition, a flag of SkipNegativeEnergy is added to control the removal of cluster with rawE <= 0