Fix toggleable editor button styles (#2531)

qt/aqt/editor.py

@@ -236,7 +236,9 @@ require("anki/ui").loaded.then(() => require("anki/NoteEditor").instances[0].too
 
                     def on_hotkey() -> None:
                         on_activated()
-                        self.web.eval(f'toggleEditorButton("#{id}");')
+                        self.web.eval(
+                            f'toggleEditorButton(document.getElementById("{id}"));'
+                        )
 
                 else:
                     on_hotkey = on_activated

ts/editor/legacy.scss

@@ -33,3 +33,7 @@
         }
     }
 }
+
+button {
+    @include button.base($active-class: active);
+}

ts/editor/old-editor-adapter.ts

@@ -21,3 +21,7 @@ export function setFormat(cmd: string, arg?: string, _nosave = false): void {
     execCommand(cmd, false, arg);
     updateAllState(new Event(cmd));
 }
+
+export function toggleEditorButton(button: HTMLButtonElement): void {
+    button.classList.toggle("active");
+}