style: Make BlockHeaderTrait::txs_commitment [u8; 32]

[kpp]

To get rid of wild Into::<[u8; 32]>::into().

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (needs-audit@89d5b84). Learn more about missing BASE report.

Additional details and impacted files

Files with missing lines	Coverage Δ
crates/bitcoin-da/src/spec/header.rs	95.8% <100.0%> (ø)
crates/bitcoin-da/src/spec/short_proof.rs	98.4% <100.0%> (ø)
crates/sequencer/src/runner.rs	92.8% <100.0%> (ø)
...sovereign-sdk/adapters/mock-da/src/db_connector.rs	99.4% <100.0%> (ø)
...ates/sovereign-sdk/adapters/mock-da/src/service.rs	92.8% <100.0%> (ø)
...es/sovereign-sdk/adapters/mock-da/src/types/mod.rs	64.1% <100.0%> (ø)
...reign-sdk/rollup-interface/src/state_machine/da.rs	65.9% <ø> (ø)

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[github-actions]

Proving stats report

Comparing patch(2cca182) to base(6ed8929).

	Metric	Base	Patch	Change
✅	Total Cycles	5,920,260,096	5,920,260,096	-
✅	User Cycles	4,812,631,396	4,812,631,396	-
✅	Paging Cycles	943,234,084	943,234,084	-
✅	Reserved Cycles	164,394,616	164,394,616	-
✅	State Diff Size (bytes)	104,526	104,526	-

[eyusufatik]

it makes sense to remove hash type and make prev_hash also [u8; 32]