chore(ci): misc ci fixes, workflow renames, and system test concurrency

[bshaffer]

Misc test improvements and fixes, namely:

• Renames conformance-test and conformance to bigtable-conformance and storage-conformance respectively.
• Increases Windows pack-n-play test timeouts to 10 minutes and adds --no-audit --no-fund to speed up installs.
• Scopes --no-experimental-require-module strictly to Node 22 in CI scripts to prevent ESM crashes on Node 24 and 26.
• Prevents Bigtable's reapInstances cleanup script from deleting active test instances missing a time_created label.
• Fixes Bigtable OpenTelemetry timestamp clamping (endTime = startTime + 1ns) to prevent Cloud Monitoring INVALID_ARGUMENT export errors.
• Fixes Firestore GCB system test contention by running standard and enterprise databases in two concurrent streams instead of four.

We will be able to comment out triggering all unit tests on ci/ script once the sharding PR (#9021) lands.

[gemini-code-assist]

Code Review

This pull request introduces several CI and testing improvements, including test sharding and strict mode support in run_conditional_tests.sh, migration to the standard URL API in nodejs-googleapis-common, and robust error cause handling in gcp-metadata. Feedback on these changes highlights a missing system-test:enterprise:emulator:grpc script in firestore/package.json that was accidentally removed, a potential issue with prematurely unwrapping error causes in gcp-metadata, and the need to initialize the STRICT variable in run_conditional_tests.sh to prevent unbound variable errors.

[bshaffer]

@gemini-code-assist please review!

[gemini-code-assist]

Code Review

This pull request introduces several CI and testing improvements, including support for strict mode, dry-run sharding, and test sharding in run_conditional_tests.sh, updated Mocha reporter configurations, and increased test timeouts. It also replaces the deprecated url.parse with new URL in nodejs-googleapis-common, refines error handling in gcp-metadata, and updates instance reaping logic in bigtable system tests. Feedback is provided for gcp-metadata to ensure that nested errors within an AggregateError are also correctly unwrapped to prevent them from resolving to 'UNKNOWN' error codes.

[westarle]

Can you move this to an independent PR? And include the command you used to generate it?

[bshaffer]

I didn't generate it, owlbot generates it and automatically adds it to PRs which don't have it but touch files in the directory (because it's out of date)...

I actually did create a separate PR for it, but since tests fail on it without THIS PR, I thought it was appropriate to put it in this one. Here it is (I closed it, but just reopened it if you'd rather merge it first): #9057

[westarle]

Thanks for explaining, I don't love Owlbot creating commits.

For now, ideally you could push a commit to #9057 to just breaks caused by owlbot and submit that first.

[bshaffer]

I also think it's very strange that owlbot commits directly to branches, and I don't like it at all.

As for #9057, we can just ignore the failing bigtable-system-tests knowing that they'll be fixed by this PR, and merge it.

Note: I think we should disable bigtable-system-tests anyway because they take 90 minutes to run and are flakey. Until they are faster and more reliable they are only slowing us down...

[westarle]

Thanks for explaining, I don't love Owlbot creating commits.

For now, ideally you could push a commit to #9057 to just breaks caused by owlbot and submit that first.

[bshaffer]

I have broken out this PR into smaller, component-isolated PRs as requested:

• fix(bigtable): test resource leaks, timestamp clamping, and metrics exporter #9059: Bigtable CI fixes (exporter.ts, bigtable.ts, common.ts, gcp-metrics-handler.ts)
• chore(firestore): silence conformance logs and fix system test concurrency #9060: Firestore CI fixes (runner.ts, firestore.ts, package.json)
• fix(core): discovery url handling, error code review helper, and pack-n-play test timeouts #9061: Core library & pack-n-play CI fixes (gcp-metadata, nodejs-googleapis-common, pack-n-play)
• chore(ci): rename conformance workflows for clarity #9062: GitHub Actions workflow renames (bigtable-conformance.yaml, storage-conformance.yaml)
• chore: update bigtable from OwlBot post-processor #9057 (owlbot changes for Bigtable)