fix(file-detail): show snackbar crash

[alperozturk96]

Exception java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.Resources android.view.View.getResources()' on a null object reference
  at com.google.android.material.snackbar.Snackbar.make (Snackbar.java:191)
  at com.owncloud.android.utils.DisplayUtils.showSnackMessage (DisplayUtils.java:634)
  at com.owncloud.android.ui.fragment.FileDetailSharingFragment.lambda$fetchSharees$1 (FileDetailSharingFragment.java:189)
  at com.owncloud.android.ui.fragment.FileDetailSharingFragment.$r8$lambda$YWJAJ2t4LoLqlEaRn1FST1E5QaY (Unknown Source)
  at com.owncloud.android.ui.fragment.FileDetailSharingFragment$$ExternalSyntheticLambda9.invoke (D8$$SyntheticClass)
  at com.owncloud.android.ui.fragment.share.RemoteShareRepository$fetchSharees$1$1.invokeSuspend (RemoteShareRepository.kt:54)
  at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith (ContinuationImpl.kt:34)
  at kotlinx.coroutines.DispatchedTask.run (DispatchedTask.kt:101)
  at android.os.Handler.handleCallback (Handler.java:942)
  at android.os.Handler.dispatchMessage (Handler.java:99)
  at android.os.Looper.loopOnce (Looper.java:226)
  at android.os.Looper.loop (Looper.java:313)
  at android.app.ActivityThread.main (ActivityThread.java:8757)
  at java.lang.reflect.Method.invoke
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:571)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1067)

[alperozturk96]

/backport to stable-3.36

[github-actions]

blue-Light-Screenshot test failed, but no output was generated. Maybe a preliminary stage failed.

[github-actions]

Codacy

SpotBugs

Category	Base	New
Bad practice	42	42
Correctness	75	75
Dodgy code	256	253
Experimental	1	1
Internationalization	7	7
Malicious code vulnerability	2	2
Multithreaded correctness	34	34
Performance	44	44
Security	18	18
Total	479	476

[github-actions]

APK file: https://www.kaminsky.me/nc-dev/android-artifacts/16579.apk



To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud app.