Temporarily skip node status failover integration tests

[d-wang-commit]

Description

Temporarily skip node status failover integration tests

Comment out all nine @Test annotations in IoTDBNodeStatusFailoverIT and add a class-level @Ignore. The ignore annotation lets JUnit skip the class without reporting "No runnable methods". Keep the test bodies and helpers for re-enabling the tests later.

Tests

• UT: no tests added or modified; production code is unchanged.
• IT: all nine tests in IoTDBNodeStatusFailoverIT are temporarily disabled. No new ITs were added, and the cluster scenarios were not run.
• Validation: Spotless passed for the changed file. Compiled the proposed class with Java 17 against the existing local test dependencies and ran JUnitCore: 0 tests run, 1 class ignored, 0 failures. git diff --check passed.

Side effects and risks

Automated coverage of node status persistence during leader changes, shutdowns, quorum loss, snapshot recovery, and node removal is temporarily reduced. Re-enable the annotations and remove the class-level ignore when the tests are ready to run again. Production behavior is unchanged.

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This PR has:

• been self-reviewed.
• added comments explaining the "why" and the intent of the code wherever would not be obvious for an unfamiliar reader.

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Key changed/added classes (or packages if there are too many classes) in this PR

• IoTDBNodeStatusFailoverIT: temporarily disables all nine integration tests while retaining their implementation.