* rpc middleware: update comment * rpc middleware: use errorCodes const * rpc middleware: only create event props once * rpc middleware: rn properties -> eventProperties * rpc middleware: use TransactionStatus const * rpc middleware: use const for ui_customizations * rpc middleware: no need to push null eventProp - also removes === null check which makes this logic a bit more robust * rpc middleware: rn METRIC..OPTIONS -> METRIC..OPT * clean: add consistency * rpc middleware: refactor let msgParams * lint: rm unused METAMETRIC_KEY * fix test: do not pass ui_customizations: null * rpc middleware test: consolidate tests * rpc middleware: fix siwe event .push returns length of mutated array * rpc middleware test: add siwe test * rpc middleware test: rm redudant set
