fix(pool): fix execution gas eff check for v0.6 with paymasters

[dancoombs]

Fixes #976

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 59.13%. Comparing base (92ddf82) to head (e400718).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/pool/src/mempool/uo_pool.rs	66.66%	1 Missing ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
crates/pool/src/mempool/uo_pool.rs	92.05% <66.66%> (-0.06%)	⬇️

... and 2 files with indirect coverage changes

Flag	Coverage Δ
unit-tests	59.13% <66.66%> (-0.05%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
rundler binary	0.00% <ø> (ø)
builder	65.60% <ø> (ø)
dev	∅ <ø> (∅)
pool	66.95% <66.66%> (-0.01%)	⬇️
provider	19.49% <ø> (ø)
rpc	26.43% <ø> (ø)
sim	77.04% <ø> (ø)
tasks	∅ <ø> (∅)
types	67.27% <ø> (-0.48%)	⬇️
utils	30.06% <ø> (ø)

[0xfourzerofour]

LGTM