goTest: Implement compatibility for test suite sub-tests

[sonalys]

goTest: Implement compatibility for test suite sub-tests

• Increase regex compatibility for test suites and its sub-tests
  • Changes regex to search for any root test suite functions that matches the function name and sub-test name
  • Also contains a fix for debugging
  • I noticed some incompatibility between funcName sanitization and some pre-existing regexes for test suite detection
• Fix CodeLen args propagation ( it was passed as undefined before )
  • Allows to run test functions and sub tests without having cursor inside

These changes are just hotfixes for the suite detection bug that is still present in the codebase. I would require further help to identify the issue behind the existent test suite detection problems with the regexes.

Fixes golang/vscode-go#3725