chore: downgrade spammy log

[mattsse]

this can be invoked when we manually download blocks and become a bit spammy, we also already log this here on FCU

reth/crates/consensus/beacon/src/engine/mod.rs

Line 960 in 3b7a049

warn!(target: "consensus::engine", ?error, ?state, "Failed to canonicalize the head hash");

[codecov]

Codecov Report

Merging #4853 (3b7a049) into main (53ff254) will decrease coverage by 1.28%.
The diff coverage is 0.00%.

Files	Coverage Δ
crates/blockchain-tree/src/blockchain_tree.rs	83.61% <0.00%> (ø)

... and 62 files with indirect coverage changes

Flag	Coverage Δ
integration-tests	12.94% <0.00%> (-2.69%)	⬇️
unit-tests	62.68% <0.00%> (-0.04%)	⬇️

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

Components	Coverage Δ
reth binary	31.23% <ø> (-0.79%)	⬇️
blockchain tree	83.76% <0.00%> (ø)
pipeline	88.45% <ø> (ø)
storage (db)	72.48% <ø> (-0.84%)	⬇️
trie	94.48% <ø> (ø)
txpool	48.41% <ø> (-1.10%)	⬇️
networking	73.71% <ø> (-3.03%)	⬇️
rpc	55.87% <ø> (-1.92%)	⬇️
consensus	61.06% <ø> (ø)
revm	28.54% <ø> (ø)
payload builder	8.16% <ø> (ø)
primitives	84.09% <ø> (-1.20%)	⬇️