[Testing Only] track peak rss for CI state migration test with cacheless hamt iteration

[hanabi1224]

Summary of changes

Changes introduced in this pull request:

(Compare to #6037)

	Command being timed: "forest --chain calibnet --encrypt-keystore false --halt-after-import --height=-200 --no-gc --import-snapshot https://forest-snapshots.fra1.cdn.digitaloceanspaces.com/debug/filecoin_calibnet_height_16900.car.zst"
	Elapsed (wall clock) time (h:mm:ss or m:ss): 0:49.65
	Maximum resident set size (kbytes): 1150144
	
	Command being timed: "forest --chain calibnet --encrypt-keystore false --halt-after-import --height=-200 --no-gc --import-snapshot https://forest-snapshots.fra1.cdn.digitaloceanspaces.com/debug/filecoin_calibnet_height_322454.car.zst"
	Elapsed (wall clock) time (h:mm:ss or m:ss): 1:06.41
	Maximum resident set size (kbytes): 737880
	
	Command being timed: "forest --chain calibnet --encrypt-keystore false --halt-after-import --height=-200 --no-gc --import-snapshot https://forest-snapshots.fra1.cdn.digitaloceanspaces.com/debug/filecoin_calibnet_height_489194.car.zst"
	Elapsed (wall clock) time (h:mm:ss or m:ss): 1:28.99
	Maximum resident set size (kbytes): 1106632
	
	Command being timed: "forest --chain calibnet --encrypt-keystore false --halt-after-import --height=-200 --no-gc --import-snapshot https://forest-snapshots.fra1.cdn.digitaloceanspaces.com/debug/filecoin_calibnet_height_492314.car.zst"
	Elapsed (wall clock) time (h:mm:ss or m:ss): 1:02.82
	Maximum resident set size (kbytes): 544292

Reference issue to close (if applicable)

Closes

Other information and links

Change checklist

• I have performed a self-review of my own code,
• I have made corresponding changes to the documentation. All new code adheres to the team's documentation standards,
• I have added tests that prove my fix is effective or that my feature works (if possible),
• I have made sure the CHANGELOG is up-to-date. All user-facing changes should be reflected in this document.

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✨ Finishing Touches

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch hm/perf-test-hamt-cacheless-iteration

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