Connectors: Expose isFileModDisabled flag to connector script module data.

Adds an `isFileModDisabled` boolean — derived from `wp_is_file_mod_allowed(   'install_plugins' )` — to the data exposed via the `script_module_data_options-connectors-wp-admin` filter, so the connectors UI can adapt when file modifications are disabled.

Props jorgefilipecosta, westonruter, jeffpaul.
See #65209.

git-svn-id: https://develop.svn.wordpress.org/trunk@62341 602fd350-edb4-49c9-b593-d223f7449a82

Author: jorgefilipecosta

src/wp-includes/connectors.php

@@ -723,7 +723,8 @@ function _wp_connectors_get_connector_script_module_data( array $data ): array {
 		$connectors[ $connector_id ] = $connector_out;
 	}
 	ksort( $connectors );
-	$data['connectors'] = $connectors;
+	$data['connectors']        = $connectors;
+	$data['isFileModDisabled'] = ! wp_is_file_mod_allowed( 'install_plugins' );
 	return $data;
 }
 add_filter( 'script_module_data_options-connectors-wp-admin', '_wp_connectors_get_connector_script_module_data' );