[lexical] Bug Fix: update block cursor if selection has changed (#7947)

Author: fantactuka

packages/lexical/src/LexicalUpdates.ts

@@ -623,7 +623,10 @@ export function $commitPendingUpdates(
     editor._editable &&
     // domSelection will be null in headless
     domSelection !== null &&
-    (needsUpdate || pendingSelection === null || pendingSelection.dirty) &&
+    (needsUpdate ||
+      pendingSelection === null ||
+      pendingSelection.dirty ||
+      !pendingSelection.is(currentSelection)) &&
     rootElement !== null &&
     !tags.has(SKIP_DOM_SELECTION_TAG)
   ) {