[release-1.10] chore(e2e): remove remaining migrated plugin tests and CI infrastructure

[teknaS47]

Summary

Backport of #4898 to release-1.10.

• Removes E2E tests for Orchestrator and Extensions plugins (migrated to rhdh-plugin-export-overlays)
• Removes all Orchestrator CI infrastructure (scripts, operators, SonataFlow setup)
• Removes plugin entries from Helm values files, ConfigMaps, and RBAC policies for Orchestrator and Extensions
• Bulk Import is intentionally preserved — not yet backported to 1.10 in overlays

What's kept (compared to main PR)

• bulk-import.spec.ts, page object, and test data
• Bulk Import plugin entries in values_showcase.yaml and values_showcase-rbac.yaml
• bulkImport: config and catalog URL in app-config-rhdh-rbac.yaml
• bulk_import role in rbac-policy.csv, rbac-constants.ts, and authentication-providers/yamls/rbac-policy.csv
• Bulk Import testIgnore/testMatch entries in playwright.config.ts

Jira: RHIDP-14965

Test plan

• OCP Helm PR job (showcase + showcase-rbac) — validates deployment with removed plugins and remaining tests pass
• OCP Helm Nightly job — validates showcase-sanity-plugins, localization, and runtime
• OCP Operator job — validates showcase-operator + showcase-operator-rbac

Made with Cursor

[sanketpathak]

/lgtm

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 69.60%. Comparing base (e9b7221) to head (2012711).
⚠️ Report is 1 commits behind head on release-1.10.

Additional details and impacted files

@@                Coverage Diff                @@
##           release-1.10    #4975       +/-   ##
=================================================
+ Coverage         41.03%   69.60%   +28.57%     
=================================================
  Files               121      111       -10     
  Lines              2220     4702     +2482     
  Branches            563      536       -27     
=================================================
+ Hits                911     3273     +2362     
- Misses             1303     1429      +126     
+ Partials              6        0        -6     

Flag	Coverage Δ
install-dynamic-plugins	92.44% <ø> (?)
rhdh	38.81% <ø> (-2.23%)	⬇️

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[github-actions]

Image was built and published successfully. It is available at:

• quay.io/rhdh-community/rhdh:pr-4975
• quay.io/rhdh-community/rhdh:pr-4975-20127117

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud