Merge pull request #19987 from woocommerce/fix/plugin-install-get-proper-plugin-filename

Plugin installer: fix extracting filename from path

includes/class-wc-install.php

@@ -1087,7 +1087,8 @@ CREATE TABLE {$wpdb->prefix}woocommerce_termmeta (
 	 */
 	private static function associate_plugin_file( $plugins, $key ) {
 		$path                 = explode( '/', $key );
-		$plugins[ $path[1] ] = $key;
+		$filename             = end( $path );
+		$plugins[ $filename ] = $key;
 		return $plugins;
 	}