DeskTop: More consistently refresh windows after failed operations

If an operation like copy, move, delete, duplicate, etc. fails, the
affected window(s) should only refresh if there was a filesystem change.
This was not done consistently. Make it so!

Some specific fixes:

* When copying/moving/deleting files, the window(s) would always be
  refreshed, even if the operation was canceled during the enumeration
  phase or (for delete) during the confirmation prompt. Now no refresh
  is done in these cases.

* If a shortcut is "Copy to RAMCard: on first use", the RAMCard's
  window was visible, and the copy fails, the window was never
  refreshed. Now it is, conditionally.

Some deduping was done to keep the delta here down to +22 bytes.

RELEASE-NOTES.md

@@ -27,6 +27,7 @@ Project Page: https://github.com/a2stuff/a2d
 * Allow keyboard selection of icons in all windows.
 * Show tip about copying PRODOS during Format/Erase process.
 * Arrow keys now move icon selection in appropriate direction. ([#300](https://github.com/a2stuff/a2d/issues/300))
+* More consistently refresh (or don't refresh) window contents after canceled or failed operations.
 
 ### Selector
 

desktop/internal.inc

@@ -165,8 +165,8 @@ kListViewScrollTickV = kListViewRowHeight
 ;;; Operations
 
 kOperationSucceeded     = 0
-kOperationCanceled      = 1
-kOperationFailed        = $FF
+kOperationCanceled      = 1     ; no filesystem changes occurred
+kOperationFailed        = $FF   ; filesystem changes possibly occurred
 
 ;;; ============================================================
 ;;; Memory Areas