Extend Maybeconditional with helper fn

[mattsse]

Describe the feature

in #14497 we added:

reth/crates/optimism/txpool/src/maintain.rs

Lines 50 to 54 in 203e011

	if let Some(conditional) = tx.transaction.conditional() {
	if conditional.has_exceeded_block_attributes(&block_attr) {
	to_remove.push(*tx.hash());
	}
	}

we can simplify this by adding has_exceeded_block_attributes directly to the trait:

reth/crates/optimism/txpool/src/conditional.rs

Line 6 in 203e011

pub trait MaybeConditionalTransaction {

so we don't need the extra option handling

TODO

• add default impl for has_exceeded_block_attributes

Additional context

No response

[programskillforverification]

Hey, I'd like to work on this