Enable JIT validation for MEL

[ganeshvanahalli]

This PR enables JIT validation for MEL and does necessary plumbing to account for new mel related fields in the global state.

Co-authored by claude

[codecov]

Codecov Report

❌ Patch coverage is 27.77778% with 13 lines in your changes missing coverage. Please review.
✅ Project coverage is 33.62%. Comparing base (a9b2740) to head (fe7279c).
⚠️ Report is 185 commits behind head on mel-validator-createvalidationentry.

Additional details and impacted files

@@                           Coverage Diff                           @@
##           mel-validator-createvalidationentry    #4565      +/-   ##
=======================================================================
- Coverage                                33.89%   33.62%   -0.27%     
=======================================================================
  Files                                      500      500              
  Lines                                    59767    59777      +10     
=======================================================================
- Hits                                     20260    20103     -157     
- Misses                                   35906    36109     +203     
+ Partials                                  3601     3565      -36     

[github-actions]

❌ 11 Tests Failed:

Tests completed	Failed	Passed	Skipped
4613	11	4602	0

View the top 3 failed tests by shortest run time

TestPruningDBSizeReduction

Stack Traces | 0.000s run time

=== RUN   TestPruningDBSizeReduction
--- FAIL: TestPruningDBSizeReduction (0.00s)

TestAliasingFlaky

Stack Traces | -0.000s run time

=== RUN   TestAliasingFlaky
=== PAUSE TestAliasingFlaky
=== CONT  TestAliasingFlaky
WARN [03-26|20:36:22.960] Getting file info                        dir= error="stat : no such file or directory"
INFO [03-26|20:36:22.960] Started log indexer
INFO [03-26|20:36:22.960] Started log indexer
    common_test.go:775: BuildL1 deployConfig: DeployBold=true, DeployReferenceDAContracts=false

TestBatchPosterL1SurplusMatchesBatchGasFlaky

Stack Traces | 0.580s run time

... [CONTENT TRUNCATED: Keeping last 20 lines]
panic: runtime error: invalid memory address or nil pointer dereference [recovered, repanicked]
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x2083cb2]

goroutine 16 [running]:
testing.tRunner.func1.2({0x37e6ca0, 0x61fb9c0})
	/opt/hostedtoolcache/go/1.25.8/x64/src/testing/testing.go:1872 +0x237
testing.tRunner.func1()
	/opt/hostedtoolcache/go/1.25.8/x64/src/testing/testing.go:1875 +0x35b
panic({0x37e6ca0?, 0x61fb9c0?})
	/opt/hostedtoolcache/go/1.25.8/x64/src/runtime/panic.go:783 +0x132
github.com/offchainlabs/nitro/arbnode.(*InboxTracker).GetBatchCount(0x16cb1900?)
	/home/runner/work/nitro/nitro/arbnode/inbox_tracker.go:210 +0x12
github.com/offchainlabs/nitro/arbnode.(*InboxTracker).FindInboxBatchContainingMessage(0x0, 0x8)
	/home/runner/work/nitro/nitro/arbnode/inbox_tracker.go:225 +0x2f
github.com/offchainlabs/nitro/system_tests.TestBatchPosterL1SurplusMatchesBatchGasFlaky(0xc00010bc00)
	/home/runner/work/nitro/nitro/system_tests/batch_poster_test.go:838 +0x725
testing.tRunner(0xc00010bc00, 0x41b9950)
	/opt/hostedtoolcache/go/1.25.8/x64/src/testing/testing.go:1934 +0xea
created by testing.(*T).Run in goroutine 1
	/opt/hostedtoolcache/go/1.25.8/x64/src/testing/testing.go:1997 +0x465

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[rauljordan]

looks good! quite straightforward

[rauljordan]

looks like there is a real failing issue though @ganeshvanahalli