ROX-33125: deprecation notices for helm and manifests

[sachaudh]

Description

Jira: ROX-33125

Add deprecation warning alerts to the Helm chart and legacy manifest bundle installation flows in the cluster setup UI. Users are warned that:

• The rhacs/secured-cluster-services Helm chart is deprecated since 4.11 and will be removed in 5.1
• The legacy manifest bundle installation method is deprecated since 4.11 and will be removed in 5.1
• They should migrate to the Kubernetes operator

Warnings appear in:

• Init Bundles > Helm chart tab
• Cluster Registration Secrets > Helm chart tab (and modal)
• Legacy installation > Deployment step (manifest download)

User-facing documentation

• CHANGELOG.md is updated OR update is not needed
• documentation PR is created and is linked above OR is not needed

Testing and quality

• the change is production ready: the change is GA, or otherwise the functionality is gated by a feature flag
• CI results are inspected

Automated testing

• added unit tests
• added e2e tests
• added regression tests
• added compatibility tests
• modified existing tests

How I validated my change

• Verified ESLint passes on all 3 modified files
• Verified TypeScript type checking passes (npx tsc --noEmit)
• Additive-only change (inserting Alert components) with no logic modifications

Screenshots

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[sachaudh]

@porridge (and reviewers), I have a few follow-up questions after working on this change:

1. Should the Helm chart tab also surface the deprecation through a text change (e.g., "Helm chart (deprecated)")? Right now, you'd have to go into the tab to see that it's deprecated.

2. When creating an init bundle, users can select the "Helm chart" option as the installation method and download the bundle without seeing the deprecation warning. Should the warning be surfaced in the form itself? 3. The change mentions deprecation in `4.11.0` and removal in `5.1.0`. @porridge can you confirm that as still true for this? I'll dm PMs to make sure they're good with that as well.

[rhacs-bot]

Images are ready for the commit at 26a7a02.

To use with deploy scripts, first export MAIN_IMAGE_TAG=4.11.x-353-g26a7a026f0.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 49.25%. Comparing base (c901cd9) to head (26a7a02).

Additional details and impacted files

@@                                Coverage Diff                                @@
##           ROX-33119/operator-instructions-non-openshift   #19552      +/-   ##
=================================================================================
- Coverage                                          49.27%   49.25%   -0.02%     
=================================================================================
  Files                                               2726     2727       +1     
  Lines                                             205625   205788     +163     
=================================================================================
+ Hits                                              101312   101369      +57     
- Misses                                             96777    96885     +108     
+ Partials                                            7536     7534       -2     

Flag	Coverage Δ
go-unit-tests	49.25% <ø> (-0.02%)	⬇️

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[openshift-ci]

@sachaudh: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/ocp-4-21-nongroovy-e2e-tests	26a7a02	link	false	/test ocp-4-21-nongroovy-e2e-tests

Full PR test history. Your PR dashboard.

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