chore: update playwright config to only run *.spec.js files

Author: alvyynm

playwright.config.cjs

@@ -12,6 +12,7 @@ import { defineConfig, devices } from "@playwright/test";
  */
 module.exports = defineConfig({
   testDir: "./tests",
+  testMatch: "**/*.spec.js", // only run *.spec.js files
   /* Run tests in files in parallel */
   fullyParallel: true,
   /* Fail the build on CI if you accidentally left test.only in the source code. */