IJPL-201073 Make reloadPanes() private

It was `@Internal` and not used anywhere else.
Making it private will limit the number of call paths
that we'll have to reason about when fixing it.

GitOrigin-RevId: f78685518c29a6b24b0b677ea927839ccb40f068

platform/lang-impl/src/com/intellij/ide/projectView/impl/ProjectViewImpl.java

@@ -1036,8 +1036,7 @@ public class ProjectViewImpl extends ProjectView implements PersistentStateCompo
     }
   }
 
-  @ApiStatus.Internal
-  public synchronized void reloadPanes() {
+  private synchronized void reloadPanes() {
     if (project.isDisposed() || !isExtensionsLoaded.get()) return; // panes will be loaded later
 
     Map<String, AbstractProjectViewPane> newPanes = loadPanes();