enhance: call gc after viewing commit changed

Author: love-linger

src/ViewModels/CommitDetail.cs

@@ -623,6 +623,8 @@ private void Refresh()
             RevisionFileSearchFilter = string.Empty;
             IsRevisionFileSearchSuggestionOpen = false;
 
+            GC.Collect();
+
             if (_commit == null)
                 return;