[clang] [clang-tools-extra] [clang] Improve nested name specifier AST representation (PR #147835)

[Matheus Izvekov via cfe-commits]

mizvekov wrote:

The HLSL Tests bot failure was some GitHub permission issue when publishing the results of the successful run:
```
2025-08-09T07:06:35.4098240Z Request POST /repos/llvm/llvm-project/check-runs failed with 403: Forbidden
2025-08-09T07:06:35.4098670Z 2025-08-09 02:06:35 -0500 - github.GithubRetry -  INFO - Request POST /repos/llvm/llvm-project/check-runs failed with 403: Forbidden
2025-08-09T07:06:35.4099210Z Traceback (most recent call last):
2025-08-09T07:06:35.4100200Z   File "/Users/cbieneman/actions-runner/_work/_actions/EnricoMi/publish-unit-test-result-action/170bf24d20d201b842d7a52403b73ed297e6645b/macos/../python/publish_test_results.py", line 546, in <module>
2025-08-09T07:06:35.4101240Z     main(settings, gha)
2025-08-09T07:06:35.4101840Z   File "/Users/cbieneman/actions-runner/_work/_actions/EnricoMi/publish-unit-test-result-action/170bf24d20d201b842d7a52403b73ed297e6645b/macos/../python/publish_test_results.py", line 269, in main
2025-08-09T07:06:35.4102530Z     Publisher(settings, gh, gha).publish(stats, results.case_results, conclusion)
2025-08-09T07:06:35.4103150Z   File "/Users/cbieneman/actions-runner/_work/_actions/EnricoMi/publish-unit-test-result-action/170bf24d20d201b842d7a52403b73ed297e6645b/python/publish/publisher.py", line 233, in publish
2025-08-09T07:06:35.4112040Z     data = self.publish_check(data)
2025-08-09T07:06:35.4112950Z   File "/Users/cbieneman/actions-runner/_work/_actions/EnricoMi/publish-unit-test-result-action/170bf24d20d201b842d7a52403b73ed297e6645b/python/publish/publisher.py", line 461, in publish_check
2025-08-09T07:06:35.4114640Z     check_run = self._repo.create_check_run(name=self._settings.check_name,
2025-08-09T07:06:35.4115270Z   File "/Users/cbieneman/actions-runner/_work/llvm-project/llvm-project/enricomi-publish-action-venv/lib/python3.9/site-packages/github/Repository.py", line 3885, in create_check_run
2025-08-09T07:06:35.4129000Z     headers, data = self._requester.requestJsonAndCheck(
2025-08-09T07:06:35.4129600Z   File "/Users/cbieneman/actions-runner/_work/llvm-project/llvm-project/enricomi-publish-action-venv/lib/python3.9/site-packages/github/Requester.py", line 550, in requestJsonAndCheck
2025-08-09T07:06:35.4133670Z     return self.__check(*self.requestJson(verb, url, parameters, headers, input, self.__customConnection(url)))
2025-08-09T07:06:35.4134330Z   File "/Users/cbieneman/actions-runner/_work/llvm-project/llvm-project/enricomi-publish-action-venv/lib/python3.9/site-packages/github/Requester.py", line 715, in requestJson
2025-08-09T07:06:35.4134930Z     return self.__requestEncode(cnx, verb, url, parameters, headers, input, encode)
2025-08-09T07:06:35.4135520Z   File "/Users/cbieneman/actions-runner/_work/llvm-project/llvm-project/enricomi-publish-action-venv/lib/python3.9/site-packages/github/Requester.py", line 812, in __requestEncode
2025-08-09T07:06:35.4136240Z     status, responseHeaders, output = self.__requestRaw(cnx, verb, url, requestHeaders, encoded_input)
2025-08-09T07:06:35.4136880Z   File "/Users/cbieneman/actions-runner/_work/llvm-project/llvm-project/enricomi-publish-action-venv/lib/python3.9/site-packages/github/Requester.py", line 846, in __requestRaw
2025-08-09T07:06:35.4137490Z     response = cnx.getresponse()
2025-08-09T07:06:35.4138000Z   File "/Users/cbieneman/actions-runner/_work/llvm-project/llvm-project/enricomi-publish-action-venv/lib/python3.9/site-packages/github/Requester.py", line 198, in getresponse
2025-08-09T07:06:35.4138500Z     r = verb(
2025-08-09T07:06:35.4138940Z   File "/Users/cbieneman/actions-runner/_work/llvm-project/llvm-project/enricomi-publish-action-venv/lib/python3.9/site-packages/requests/sessions.py", line 637, in post
2025-08-09T07:06:35.4141770Z     return self.request("POST", url, data=data, json=json, **kwargs)
2025-08-09T07:06:35.4142390Z   File "/Users/cbieneman/actions-runner/_work/llvm-project/llvm-project/enricomi-publish-action-venv/lib/python3.9/site-packages/requests/sessions.py", line 589, in request
2025-08-09T07:06:35.4142900Z     resp = self.send(prep, **send_kwargs)
2025-08-09T07:06:35.4143390Z   File "/Users/cbieneman/actions-runner/_work/llvm-project/llvm-project/enricomi-publish-action-venv/lib/python3.9/site-packages/requests/sessions.py", line 703, in send
2025-08-09T07:06:35.4143890Z     r = adapter.send(request, **kwargs)
2025-08-09T07:06:35.4144370Z   File "/Users/cbieneman/actions-runner/_work/llvm-project/llvm-project/enricomi-publish-action-venv/lib/python3.9/site-packages/requests/adapters.py", line 667, in send
2025-08-09T07:06:35.4145190Z     resp = conn.urlopen(
2025-08-09T07:06:35.4145680Z   File "/Users/cbieneman/actions-runner/_work/llvm-project/llvm-project/enricomi-publish-action-venv/lib/python3.9/site-packages/urllib3/connectionpool.py", line 934, in urlopen
2025-08-09T07:06:35.4149990Z     retries = retries.increment(method, url, response=response, _pool=self)
2025-08-09T07:06:35.4150560Z   File "/Users/cbieneman/actions-runner/_work/llvm-project/llvm-project/enricomi-publish-action-venv/lib/python3.9/site-packages/github/GithubRetry.py", line 187, in increment
2025-08-09T07:06:35.4152030Z     raise Requester.createException(response.status, response.headers, content)  # type: ignore
2025-08-09T07:06:35.4152720Z github.GithubException.GithubException: 403 {"message": "Resource not accessible by integration", "documentation_url": "https://docs.github.com/rest/checks/runs#create-a-check-run", "status": "403"}
2025-08-09T07:06:35.4812330Z ##[error]Process completed with exit code 1.
```

https://github.com/llvm/llvm-project/pull/147835