fix: only early-return if an exact bytecode match is found

[DaniPopes]

Closes #7144

Also re-added the threshold present before refactoring:

foundry/crates/evm/traces/src/identifier/local.rs

Lines 41 to 49 in e911d22

	let score = diff_score(known_code, code);
	// Note: the diff score can be inaccurate for small contracts so we're using
	// a relatively high threshold here to avoid filtering out too many
	// contracts.
	if score < 0.85 {
	Some((OrderedFloat(score), id, abi))
	} else {
	None
	}

[klkvr]

lgtm, was writing a comment exactly about 0.85 threshhold right before you commited it :)