[5.x] Fix Code fieldtype not removing the overflow hidden style on bo…

…dy when closing Fullscreen Mode (#10221)

Fix Code fieldtype not removing the overflow hidden style on body when closing Fullscreen Mode

Closes #10208

resources/js/components/fieldtypes/CodeFieldtype.vue

@@ -198,6 +198,10 @@ export default {
 
             this.codemirror.setOption('fullScreen', this.fullScreenMode);
 
+            if (this.fullScreenMode === false) {
+                document.documentElement.removeAttribute('style');
+            }
+
             // CodeMirror also needs to be manually refreshed when made visible in the DOM
             this.$events.$on('tab-switched', this.refresh);
         }