fix: use pending block tag for actual pending block

[mattsse]

Closes #4965

this fixes a bug were we used the pending block (inside tree) hash to lookup the state, however the state_at fn only checks canonical blocks if a hash is provided

[codecov]

Codecov Report

Merging #4966 (559e79d) into main (1cccd09) will decrease coverage by 0.03%.
The diff coverage is 0.00%.

Files	Coverage Δ
crates/storage/provider/src/traits/state.rs	27.11% <ø> (ø)
crates/rpc/rpc/src/eth/api/transactions.rs	30.76% <0.00%> (ø)
crates/rpc/rpc/src/eth/api/mod.rs	61.19% <0.00%> (-0.31%)	⬇️
crates/storage/provider/src/providers/mod.rs	21.42% <0.00%> (-0.06%)	⬇️
crates/rpc/rpc/src/eth/api/pending_block.rs	0.00% <0.00%> (ø)

... and 7 files with indirect coverage changes

Flag	Coverage Δ
integration-tests	15.26% <0.00%> (-0.02%)	⬇️
unit-tests	62.53% <0.00%> (-0.02%)	⬇️

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

Components	Coverage Δ
reth binary	30.76% <ø> (ø)
blockchain tree	80.63% <ø> (ø)
pipeline	88.45% <ø> (ø)
storage (db)	74.40% <0.00%> (-0.01%)	⬇️
trie	94.52% <ø> (ø)
txpool	48.52% <ø> (ø)
networking	76.08% <ø> (-0.08%)	⬇️
rpc	58.02% <0.00%> (-0.04%)	⬇️
consensus	63.01% <ø> (ø)
revm	27.79% <ø> (ø)
payload builder	7.96% <ø> (ø)
primitives	85.43% <ø> (-0.02%)	⬇️

[Rjected]

lgtm