chore: flatten eip-7685 requests into a single opaque list #4585

Job	Run time
check no_std	30s
clippy	55s
doctest	2m 23s
cfg-check	22s
docs	56s
feature-checks	6m 10s
fmt	15s
wasm-unknown	57s
test ubuntu-latest stable --no-default-features	1m 31s
wasm-wasi	1m 16s
test ubuntu-latest stable	1m 38s
test ubuntu-latest stable --all-features	2m 5s
test ubuntu-latest nightly --no-default-features	1m 2s
test ubuntu-latest nightly	47s
test ubuntu-latest nightly --all-features	1m 39s
test ubuntu-latest 1.79 --no-default-features	1m 29s
test ubuntu-latest 1.79	1m 31s
test windows-latest stable --no-default-features	3m 3s
test windows-latest stable	3m 38s
test windows-latest stable --all-features	4m 56s
test windows-latest nightly --no-default-features	2m 44s
test windows-latest nightly	2m 59s
test windows-latest nightly --all-features	4m 24s
test windows-latest 1.79 --no-default-features	3m 43s
test windows-latest 1.79	3m 49s
	54m 42s

Provide feedback