Restore confirmed picker checks when an immediate change fails

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

test/shell.d/menu-test.sh

@@ -674,6 +674,11 @@ assert(
   /onPositionChanged: function\(mouse\) \{\s*root\.selectFromPointer\(row\.index, row, mouse\)\s*\}/.test(menuQml),
   'menu row hover routes through pointer movement gate'
 )
+assert(
+  /dmenuSaved = dmenuSelected\s*\n\s*if \(dmenuOnChange\.length > 0\)/.test(menuQml)
+    && /root\.dmenuSaved = root\.dmenuSelected\s*\n\s*\} else \{\s*root\.dmenuSelected = root\.dmenuSaved/.test(menuQml),
+  'a failed immediate change restores the confirmed checks, even after reopening onto queued ones'
+)
 assert(
   /onEntered: root\.selectFromPointer\(row\.index, row, \{\s*x: mouseArea\.mouseX,\s*y: mouseArea\.mouseY\s*\}\)/.test(menuQml),
   'menu samples pointer movement immediately when entering a row'