[Consensus] When starting LocalNet from scratch, the first TriggerNextView leads to height 2 and not 1

[deblasis]

Objective

Identify the root cause and fix the misbehaviour

Origin Document

While running LocalNet from the genesis state, the first TriggerNextView advances consensus to height 2 and not 1 as expected

Goals

• Investigate the misbehaviour
• Fix the issue

Deliverable

• A PR that shows the correct behaviour

Non-goals / Non-deliverables

• Changes in the consensus logic

General issue deliverables

• Update the appropriate CHANGELOG(s)
• Update any relevant local/global README(s)
• Update relevant source code tree explanations
• Add or update any relevant or supporting mermaid diagrams

Testing Methodology

• Task specific tests or benchmarks: make ...
• New tests or benchmarks: make ...
• All tests: make test_all
• LocalNet: verify a LocalNet is still functioning correctly by following the instructions at docs/development/README.md

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Creator: @deblasis
Co-Owners: @Olshansk, @gokutheengineer

[Olshansk]

Wanted to provide additional context.

The video linked in this comment shows that behaviour.

Without diving into the issue, I believe it has to do with the fact that genesis (i.e. block height = 0) is a special case, which is why the first TriggerNextView goes straight from 0->2. I have not seen a jump by two in other cases myself.