Add SetPreferenceWithContext

[michaelkaplan13]

Why this should be merged

Fixes #4409

How this works

• Passes the P-Chain height to be used for verification of a child of the preferred block in SetPreferenceWithContext.
• Uses the preferred context when verifying P-Chain txs before the enter the mempool.

How this was tested

• Manual local tests
• Unit tests

Need to be documented in RELEASES.md?

No

[StephenButtolph]

Testing locally this seems to correctly be verifying warp messages in the mempool against the p-chain height of the next block's epoch.

[Copilot]

Pull Request Overview

This PR implements the SetPreferenceWithContext interface to pass P-Chain height context when setting block preferences. This allows the P-Chain height to be used for verification of child blocks in the mempool.

• Adds SetPreferenceWithContext interface implementation across multiple VM layers (tracedvm, metervm, proposervm, platformvm)
• Updates platformvm to use preferred block's P-Chain height context for transaction verification before mempool entry
• Adds comprehensive test coverage for the new functionality in both pre-fork and post-fork scenarios

Reviewed Changes

Copilot reviewed 16 out of 16 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
vms/tracedvm/set_preference_with_context_vm.go	New file implementing SetPreferenceWithContext with OpenTelemetry tracing
vms/tracedvm/block_vm.go	Adds SetPreferenceWithContext interface support and tracing tags
vms/proposervm/vm_test.go	Adds comprehensive test coverage for SetPreference functionality with context
vms/proposervm/vm.go	Implements logic to call SetPreferenceWithContext with next epoch's P-Chain height
vms/platformvm/vm.go	Implements SetPreferenceWithContext interface in platform VM
vms/platformvm/block/executor/manager.go	Updates manager to use preferred context's P-Chain height for transaction verification
vms/metervm/set_preference_with_context_vm.go	New file adding metrics collection for SetPreferenceWithContext
vms/metervm/block_vm.go	Adds SetPreferenceWithContext interface support with metrics
snow/engine/snowman/block/block_context_vm.go	Defines the SetPreferenceWithContext interface
vms/platformvm/block/executor/executormock/manager.go	Updates mock to support new SetPreference signature

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