chore: rm non exhaustive from ReceiptEnvelope #5574

Job	Run time
wasm-wasi	1m 24s
test ubuntu-latest stable --no-default-features	1m 59s
clippy	41s
test ubuntu-latest stable	1m 31s
check no_std	16s
docs	1m 0s
test ubuntu-latest stable --all-features	2m 35s
test ubuntu-latest nightly --no-default-features	1m 14s
doctest	1m 15s
fmt	13s
feature-checks	3m 29s
test ubuntu-latest nightly	1m 23s
test ubuntu-latest nightly --all-features	2m 2s
wasm-unknown	55s
test ubuntu-latest 1.81 --no-default-features	38s
test ubuntu-latest 1.81	52s
test windows-latest stable --no-default-features	4m 27s
test windows-latest stable	4m 41s
test windows-latest stable --all-features	5m 59s
test windows-latest nightly --no-default-features	3m 9s
test windows-latest nightly	2m 51s
test windows-latest nightly --all-features	5m 11s
test windows-latest 1.81 --no-default-features	1m 55s
test windows-latest 1.81	1m 55s
deny / cargo deny check	24s
ci success	1s
	52m 0s

Provide feedback