Workspaces now show up on their appropriate monitors. (#681)

* Workspaces now show up on their appropriate monitors.

* Fixed undefined rules showing up.

src/globals/dropdown.ts

@@ -1,6 +1,7 @@
+import { EventBox } from 'astal/gtk3/widget';
 import Variable from 'astal/variable';
 
 type GlobalEventBoxes = {
-    [key: string]: unknown;
+    [key: string]: EventBox;
 };
 export const globalEventBoxes: Variable<GlobalEventBoxes> = Variable({});