Take into account proof size for transaction payment and priority

[kianenigma]

See:

substrate/frame/transaction-payment/src/lib.rs

Lines 712 to 714 in 696bdc6

	// TODO: Take into account all dimensions of weight
	let max_block_weight = max_block_weight.ref_time();
	let info_weight = info.weight.ref_time();

and

substrate/frame/transaction-payment/src/lib.rs

Lines 205 to 207 in 696bdc6

	// TODO: Handle all weight dimensions
	let normal_max_weight = normal_max_weight.ref_time();
	let normal_block_weight = normal_block_weight.ref_time();

In both cases, a .max should be a safe and sane approach.