fix: revert the heighton uui-symbol-expand

this caused a negative effect on the backoffice and will be fixed inside the backoffice instead

Author: iOvergaard

packages/uui-symbol-expand/lib/uui-symbol-expand.element.ts

@@ -35,7 +35,6 @@ export class UUISymbolExpandElement extends LitElement {
       :host {
         display: inline-block;
         width: 12px;
-        height: 12px;
         vertical-align: middle;
       }