NIFI-15815 connector details page

[scottyaslan]

Summary

NIFI-15815

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Issue Tracking

• Apache NiFi Jira issue created

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• Pull Request title starts with Apache NiFi Jira issue number, such as NIFI-00000
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• Build completed using ./mvnw clean install -P contrib-check
  • JDK 21
  • JDK 25

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• New dependencies are compatible with the Apache License 2.0 according to the License Policy
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Documentation

• Documentation formatting appears as expected in rendered files

[mcgilman]

Reviewing...

[mcgilman]

Nice, clean addition — the split into ConnectorDetail + ConnectorDetailsContent is the right shape, sandbox flags are correctly tightened for a read-only view, and the spec coverage on the visibility branches is thorough.

A few comments below; the only one with real substance is the getFrameSource sanitize-then-bypass pattern, which is duplicated from ConnectorConfigure and worth fixing in both. The rest are small consistency/optional nits.

[mcgilman]

Thanks for the updates @scottyaslan!