Fix unlock for mobile

packages/block-library/src/gallery/gap-styles.js

@@ -11,7 +11,17 @@ import {
  */
 import { unlock } from '../lock-unlock';
 
-const { useStyleOverride } = unlock( blockEditorPrivateApis );
+// TODO: The following line should have been:
+//
+//   const unlockedApis = unlock( blockEditorPrivateApis );
+//
+// But there are hidden circular dependencies in RNMobile code, specifically in
+// certain native components in the `components` package that depend on
+// `block-editor`. What follows is a workaround that defers the `unlock` call
+// to prevent native code from failing.
+//
+// Fix once https://github.com/WordPress/gutenberg/issues/52692 is closed.
+let useStyleOverride;
 
 export default function useGapStyles( { blockGap, clientId } ) {
 	// --gallery-block--gutter-size is deprecated. --wp--style--gallery-gap-default should be used by themes that want to set a default
@@ -40,6 +50,10 @@ export default function useGapStyles( { blockGap, clientId } ) {
 		gap: ${ gapValue }
 	}`;
 
+	if ( ! useStyleOverride ) {
+		useStyleOverride = unlock( blockEditorPrivateApis ).useStyleOverride;
+	}
+
 	useStyleOverride( {
 		id: `gallery-gap-${ clientId }`,
 		css: gap,