Update spec PR review workflow diagram: simplify + make it also applicable to data-plane.

[konrad-jamrozik]

This PR, before it can be merged, requires changes to aka.ms/azsdk/specreview/merge because currently that URL refers to text in the diagram that is being removed by this PR. I also need to review any mentions of the diagram in the openapi-alps code to ensure it is not referencing information erased by this PR.

Prerequisite PRs:

• Pull Request 982: Update merge instructions to match the new diagram
• Pull Request 548310: Update guidance for PR authors to match the new diagram

This PR addresses:

• Make the ARM spec workflow diagram also apply for data-plane azure-sdk-tools#7925

This PR builds on recent improvements made to Next Steps to Merge comment:

• Pull Request 547143: Add "NotReadyForArmReview" label handling; fix "RPaasException" label handling; rework requiredLabelsRules

The new diagram:

The diagram was updated based on these instructions:

• Update the PR workflow diagram: in the check examples used, remove "Avocado" as it is no longer required. #26458 (comment)

[openapi-pipeline-app]

Next Steps to Merge

✅ All automated merging requirements have been met! To get your PR merged, see aka.ms/azsdk/specreview/merge.

[openapi-pipeline-app]

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[openapi-pipeline-app]

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[openapi-pipeline-app]

PR validation pipeline restarted successfully. If there is ApiView generated, it will be updated in this comment.

[maririos]

@konrad-jamrozik Looking into consolidating information across , in the diagram Step #2 "ARM or data-plane review` the message doesn't talk about data plane review at all. Is this because the message is no in the Next steps to Merge?
If so, should the ARM process be included in the Next Steps to merge (it probably already is) so should it be removed from this diagram?

[konrad-jamrozik]

I discussed this with @maririos offline. I didn't mention data-plane review because it was a bit too complex and I wanted to keep the diagram lightweight. But perhaps I can figure out a way to update the diagram to make it clear it is ARM xor data-plane.