fix: patch Grafana telemetry CRD validation

[amwarrier]

What changed

• Patch the bundled GrafanaNotificationPolicy CRD before Helm install or upgrade when full telemetry is enabled.
• Rewrite the invalid CEL field access from self.continue to Kubernetes' reserved-keyword form, self.__continue__.
• Traverse nested Helm dependencies so both the mutable and immutable CRD copies are covered.
• Add regression tests for both copies, already-fixed charts, unrelated files, and preservation of the remaining validation rules.

Root cause

Operator chart 2.0.0-beta.1 bundles Grafana Operator chart 5.21.4. Its GrafanaNotificationPolicy CRD uses continue, a CEL reserved keyword, without Kubernetes' required escaping. Kubernetes versions before 1.32 reject the CRD while compiling the validation rule, causing full-telemetry deployment to fail before the W&B operator is installed.

This applies the same expression change as the upstream Grafana Operator fix. The workaround is narrowly scoped to the exact CRD filename and expression, so a future operator chart containing the upstream fix is left unchanged.

Impact

Full telemetry installations from Watchtower/WSM can deploy to Kubernetes 1.30. Telemetry off and forward are unchanged.

Validation

• go test ./...
• golangci-lint run --timeout=5m --concurrency=4 --max-same-issues=20
• Verified the patch against both affected CRD copies in the exact operator-2.0.0-beta.1 archive downloaded by Watchtower.

[coderabbitai]

Important

Review skipped

Draft detected.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 00261ce3-bbe9-4b53-a004-5df0b217b9ce

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch agent/fix-grafana-crd-validation

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}

[amwarrier]

Closing in favor of the fix at the dependency owner: wandb/operator#274 upgrades Grafana Operator to 5.22.2, which contains the upstream Kubernetes CEL compatibility fix. The WSM-side chart mutation is no longer the intended solution.