Multi-OffRamp - MultiCommitStore integration & coverage

[elatoskinas]

Motivation

Integrates the MultiCommitStore, addresses TODOs to address lane-specific logic and improves test coverage

Solution

• Optimization: remove event indexing for Skipped events (since there are no strong use-cases for observability / users)
• Add source chain selector to RMN Cursing and SkippedAlreadyExecuted event
• Validate 0 chain selector
• Additional test coverage (+ AlreadyAttempted for OffRamp and MultiOffRamp test case)

[github-actions[bot]]

LCOV of commit 45c3b2c during Solidity Foundry #4647

Summary coverage rate:
  lines......: 98.7% (1256 of 1273 lines)
  functions..: 96.4% (266 of 276 functions)
  branches...: 91.9% (511 of 556 branches)

Files changed coverage rate: n/a

[github-actions[bot]]

Go solidity wrappers are out-of-date, regenerate them via the make wrappers-all command