[platform] RIDER-93719 Select in Project View: fall back to virtualFile if element is null

This should fix the regression and shouldn't break anything because if the element is null
it may either mean that it wasn't specified intentionally, and we should select the file,
or that it may have been invalidated by a PSI reparse, in which case it makes perfect
sense to select the containing file instead.

GitOrigin-RevId: 47567eddfbb4b51d71e54a4e720736b35f3b6518

Author: Sergei Tachenov

platform/lang-impl/src/com/intellij/ide/projectView/impl/SelectInProjectViewImpl.kt

@@ -134,7 +134,7 @@ internal class SelectInProjectViewImpl(
         val virtualFile: VirtualFile?,
       )
       val context = readAction {
-        val elementToSelect = elementSupplier.get() ?: return@readAction null
+        val elementToSelect = elementSupplier.get() ?: virtualFile ?: return@readAction null
         SelectionContext(
 visibleAndSelectedUserObject != null && visibleAndSelectedUserObject.canRepresent(elementToSelect),
 virtualFile ?: (elementToSelect as? PsiElement)?.virtualFile