fix: only skip last tx commit

[mattsse]

this check is in a nested loop

for block in blocks
  for call in block.calls

we can only skip the commit if it is the last tx in the last block

[klkvr]

oops

[codspeed-hq]

CodSpeed Performance Report

Merging #13528 will degrade performances by 11.58%

_{Comparing matt/only-skip-last-tx (66e9ce0) with main (3e15ae3)}

Summary

❌ 1 regressions
✅ 72 untouched benchmarks
🆕 4 new benchmarks
⁉️ 4 dropped benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	main	matt/only-skip-last-tx	Change
❌	`prefix set	preload size: 10	input size: 10	Vec with custom cursor lookup`
⁉️	`prefix set	preload size: 1000	input size: 1000	BTreeSet with BTreeSet:range lookup`
⁉️	`prefix set	preload size: 1000	input size: 1000	BTreeSet with Iterator:any lookup`
⁉️	`prefix set	preload size: 1000	input size: 1000	Vec with binary search lookup`
⁉️	`prefix set	preload size: 1000	input size: 1000	Vec with custom cursor lookup`
🆕	`prefix set	preload size: 1000	input size: 997	BTreeSet with BTreeSet:range lookup`
🆕	`prefix set	preload size: 1000	input size: 997	BTreeSet with Iterator:any lookup`
🆕	`prefix set	preload size: 1000	input size: 997	Vec with binary search lookup`
🆕	`prefix set	preload size: 1000	input size: 997	Vec with custom cursor lookup`