test: Ignore local environment setup

Local environment setup configuration is intended for the development
workflow. Applying it to the testing environment produced unexpected
outcomes where one's local configuration can cause tests to fail
unexpectedly.

packages/react-native-editor/src/index.js

@@ -52,7 +52,7 @@ const registerGutenberg = ( {
 			this.editorComponent = setup();
 
 			// Apply optional setup configuration, enabling modification via hooks.
-			if ( typeof require.context === 'function' ) {
+			if ( __DEV__ && typeof require.context === 'function' ) {
 				const req = require.context( './', false, /setup-local\.js$/ );
 				req.keys().forEach( ( key ) => req( key ).default() );
 			}