fix(cluster): fix heartbeat self managed after network fail

[zhang2014]

I hereby agree to the terms of the CLA available at: https://docs.databend.com/dev/policies/cla/

Summary

fix(cluster): fix heartbeat self managed after network fail

Tests

• Unit Test
• Logic Test
• Benchmark Test
• No Test - Explain why

Type of change

• Bug Fix (non-breaking change which fixes an issue)
• New Feature (non-breaking change which adds functionality)
• Breaking Change (fix or feature that could cause existing functionality not to work as expected)
• Documentation Update
• Refactoring
• Performance Improvement
• Other (please describe):

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This change is 

[drmingdrmer]

Reviewed 4 of 4 files at r1, all commit messages.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @zhang2014)

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src/query/management/src/warehouse/warehouse_mgr.rs line 1018 at r1 (raw file):

                    })),
            }) => Ok(seq_v.seq),
            _ if matches!(node.node_type, NodeType::SelfManaged) => Ok(0),

Add comment explaining why to return Ok(0) if the reply is not a GetResponse?

[zhang2014]

Reviewable status: 3 of 4 files reviewed, 1 unresolved discussion (waiting on @drmingdrmer)

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src/query/management/src/warehouse/warehouse_mgr.rs line 1018 at r1 (raw file):

Previously, drmingdrmer (张炎泼) wrote…

Add comment explaining why to return Ok(0) if the reply is not a GetResponse?

Done.

[drmingdrmer]

Reviewed all commit messages.
Reviewable status: 3 of 4 files reviewed, 1 unresolved discussion (waiting on @zhang2014)