[12gevmoller_sim] [EXTERNAL] [JeffersonLab/remoll] 8a1373: fix overlap

[cipriangal]

  Branch: refs/heads/feature-target-shield-design
  Home:   https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_JeffersonLab_remoll&d=DwICaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=-0uahHXTLsQsllHBZNHgOynLaY6DUxqehsUJ91-BlNY&m=vH-_TVCTdcgYZvCDSNNfGjUCgcrdnT_K-dW4Rhbgy7lykJgKomLQX0v7u9su8SYe&s=753zlDavzBTItnp0d8Dosiy71K2o-Tov00ggdIbN5Gs&e= 
  Commit: 8a1373819bff2d160988bfd47001eafdd71e2712
      https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_JeffersonLab_remoll_commit_8a1373819bff2d160988bfd47001eafdd71e2712&d=DwICaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=-0uahHXTLsQsllHBZNHgOynLaY6DUxqehsUJ91-BlNY&m=vH-_TVCTdcgYZvCDSNNfGjUCgcrdnT_K-dW4Rhbgy7lykJgKomLQX0v7u9su8SYe&s=xASRFWHdUjxyiE6tXaTUdsOaPEUwxbpBYHZlr-WT9A4&e= 
  Author: cipriangal <cipriangal at users.noreply.github.com>
  Date:   2021-12-27 (Mon, 27 Dec 2021)

  Changed paths:
    M geometry/beampipe/downstream/beampipeDSMother.gdml

  Log Message:
  -----------
  fix overlap

Co-authored-by: Zuhal Seyma Demiroglu <zuhal.seyma.demiroglu at cern.ch>