fix(pool): fix pool candidates metrics to align with builder

[dancoombs]

Proposed Changes

• Use the same logic as the builder to determine candidate status in the mempool

[codecov]

Codecov Report

Attention: Patch coverage is 67.56757% with 12 lines in your changes missing coverage. Please review.

Project coverage is 58.98%. Comparing base (7aee108) to head (856d097).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/sim/src/precheck.rs	0.00%	12 Missing ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
crates/pool/src/mempool/pool.rs	96.51% <100.00%> (-0.06%)	⬇️
crates/pool/src/mempool/uo_pool.rs	92.23% <100.00%> (-0.05%)	⬇️
crates/sim/src/precheck.rs	76.18% <0.00%> (-0.54%)	⬇️

Flag	Coverage Δ
unit-tests	58.98% <67.56%> (-0.06%)	⬇️

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	65.15% <ø> (ø)
dev	∅ <ø> (∅)
pool	66.20% <100.00%> (-0.13%)	⬇️
provider	20.25% <ø> (ø)
rpc	26.71% <ø> (ø)
sim	77.03% <0.00%> (-0.06%)	⬇️
tasks	∅ <ø> (∅)
types	67.61% <ø> (ø)
utils	30.06% <ø> (ø)