[release-1.8] fix: fix multiple small catalog issues

[christoph-jerolimov]

Description

This is a manual cherry-pick of #3605 to backport this fixes:

1. aligned pre-installed comment to make it clear why this is needed
2. marked mcp-chat as "plugin yaml" is pre-installed
3. removed pre-installed comment from github-insights description
4. removed scaffolder-integrations plugin (which was more a collection)
5. revert rename of parfuemerie-douglas/scaffolder-backend-module-azure-repositories package entity to resolve entity name is 'too long' issue

Which issue(s) does this PR fix

• Fixes #?

PR acceptance criteria

Please make sure that the following steps are complete:

• GitHub Actions are completed and successful
• Unit Tests are updated and passing
• E2E Tests are updated and passing
• Documentation is updated if necessary (requirement for new features)
• Add a screenshot if the change is UX/UI related

How to test changes / Special notes to the reviewer

[christoph-jerolimov]

This is needed because the name is too long otherwise. It's the same as in 1.7 and earlier.

[gustavolira]

would be good to also update the filename

[dzemanov]

I would let it be for now, since we are past CF, Christoph is on vacation and this is 1.8 cherry-pick. We can revisit it later. It makes sense to have filenames and Component names to match. However, then it is hard to locate the files, the issue came up for example in this PR where multiple existing packages were missed as a result of this stripping. To locate catalog backend module marketplace which is named red-hat-developer-hub-backstage-plugin-catalog-backend-module-m is a task 😄. There was a suggestion to have consistent renaming. For example red-hat-developer-hub -> rhdh, some plugins are already named like this. Not sure if any task was created for that @nickboldt.

[nickboldt]

Followup task created in https://issues.redhat.com/browse/RHIDP-9492 -- I agree we should start being consistent w/ the naming rules.

[github-actions]

The image is available at:

• quay.io/rhdh-community/rhdh:pr-3614
• quay.io/rhdh-community/rhdh:pr-3614-8ce53a09

[christoph-jerolimov]

/retest

[dzemanov]

/retest

[openshift-ci]

@christoph-jerolimov: 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/e2e-ocp-helm	8ce53a0	link	true	/test e2e-ocp-helm

Full PR test history. Your PR dashboard.

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[nickboldt]

/lgtm

[openshift-ci]

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