feat: use component dimensions to break to mobile (#3414)

Co-authored-by: Jed Fox <git@jedfox.com>

src/components/LayerUI.tsx

@@ -14,7 +14,7 @@ import { Library } from "../data/library";
 import { isTextElement, showSelectedShapeActions } from "../element";
 import { NonDeletedExcalidrawElement } from "../element/types";
 import { Language, t } from "../i18n";
-import { useIsMobile } from "../is-mobile";
+import { useIsMobile } from "../components/App";
 import { calculateScrollCenter, getSelectedElements } from "../scene";
 import { ExportType } from "../scene/types";
 import {