Send handshake for heartbeat/2 if no block - develop

[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

Select ONE:

• Documentation

• Stability bug fix

• Other

• Other - special case

Testing Changes

Select ANY that apply:

• New Tests

• Existing Tests

• Test Framework

• CI System

• Other

Consensus Changes

• Consensus Changes

API Changes

• API Changes

Documentation Additions

• Documentation Additions

[heifner]

#10627