wip: investigate timeout test discovery issue

- Renamed test data files from .js to .cjs in timeouts config
- Updated config to reference .cjs test files
- Issue: Test data files (files run BY CodeceptJS) aren't being discovered
- Root cause: With 'type:module', all .js files are ESM but test files
  use globals (Feature, Scenario) that Mocha sets up via require hook
- ESM modules can't use this pattern - need different solution
- This affects ALL test data files in sandbox, not just timeouts

Author: kobenguyent

…igs/timeouts/beforeSuite_timeout_test.js …gs/timeouts/beforeSuite_timeout_test.cjstest/data/sandbox/configs/timeouts/beforeSuite_timeout_test.js renamed to test/data/sandbox/configs/timeouts/beforeSuite_timeout_test.cjs test/data/sandbox/configs/timeouts/beforeSuite_timeout_test.js renamed to test/data/sandbox/configs/timeouts/beforeSuite_timeout_test.cjs

@@ -1,5 +1,5 @@
 module.exports = {
-  tests: './*_test.js',
+  tests: './*_test.cjs',
   output: './output',
   helpers: {
     CustomHelper: {