Backport PR #22819 on branch 6.x (PR: Fix enabled state of Run plugin actions when a file type doesn't have an associated configuration)

spyder/plugins/run/container.py

@@ -313,7 +313,11 @@ def currently_selected_configuration(self):
 
     def switch_focused_run_configuration(self, uuid: Optional[str]):
         uuid = uuid or None
-        if uuid == self.currently_selected_configuration:
+
+        # We need the first check to correctly update the run and context
+        # actions when the config is None.
+        # Fixes spyder-ide/spyder#22607
+        if uuid is not None and uuid == self.currently_selected_configuration:
             return
 
         self.metadata_model.set_current_run_configuration(uuid)

spyder/widgets/mixins.py

@@ -1452,7 +1452,7 @@ def get_match_number(self, pattern, case=False, regexp=False, word=False):
                                                word=word)
         return match_number
 
-    # ---- Array builder helper / See 'spyder/widgets/arraybuilder.py'
+    # ---- Array builder helper methods
     # -------------------------------------------------------------------------
     def enter_array_inline(self):
         """Enter array builder inline mode."""