Send handshake for heartbeat/2 if no block - 2.2.x

[heifner]

Change Description

• Send handshake message if we have not seen or sent a block for heartbeat/2.
• Always send handshake message even if it has not changed since it was last sent.

Change Type

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• Documentation

• Stability bug fix

• Other

• Other - special case

Testing Changes

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• New Tests

• Existing Tests

• Test Framework

• CI System

• Other

Consensus Changes

• Consensus Changes

API Changes

• API Changes

Documentation Additions

• Documentation Additions

[heifner]

#10622