fix(catalogs): requeue when flux resources not ready

[mikolajkucinski]

Description

• Track when flux resources are not ready and return lifecycle.Pending with RequeueAfter: 10s to ensure the controller retries promptly
• Avoid redundant status updates when the condition is already set to prevent unnecessary watch events
• Fix Expect → g.Expect bug in e2e tests (using globally scoped Expect inside Eventually)
• Re-fetch catalog inside Eventually to avoid stale data comparison

What type of PR is this? (check all applicable)

• 🍕 Feature
• 🐛 Bug Fix
• 📝 Documentation Update
• 🎨 Style
• 🧑‍💻 Code Refactor
• 🔥 Performance Improvements
• ✅ Test
• 🤖 Build
• 🔁 CI
• 📦 Chore (Release)
• ⏩ Revert

Related Tickets & Documents

• Fixes 🐛 [BUG] - flaky catalog E2E test #1689

Added tests?

• 👍 yes
• 🙅 no, because they aren't needed
• 🙋 no, because I need help
• Separate ticket for tests # (issue/pr)

Added to documentation?

• 📜 README.md
• 🤝 Documentation pages updated
• 🙅 no documentation needed
• (if applicable) generated OpenAPI docs for CRD changes

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• New and existing unit tests pass locally with my changes

[abhijith-darshan]

The E2E tests are stable now for Catalog.... Occasional timeouts happen due to resource constrains - https://github.com/cloudoperators/greenhouse/actions/runs/22084480838

But in general it is stable now - https://github.com/cloudoperators/greenhouse/actions/workflows/ci-e2e-test-nightly.yaml

FMPOV this PR can be closed for now.

[IvoGoman]

Closing as the test failures are resolved meanwhile