chore(provider): document privileged status of EIP-1559 #2636

Job	Run time
doctest	2m 26s
test ubuntu-latest stable --no-default-features	2m 36s
test ubuntu-latest stable	2m 41s
feature-checks	5m 28s
no-std	22s
test ubuntu-latest nightly --no-default-features	2m 14s
test ubuntu-latest nightly	2m 10s
wasm-unknown	1m 29s
wasm-wasi	2m 2s
test ubuntu-latest 1.76 --no-default-features	1m 39s
test ubuntu-latest 1.76	1m 50s
test windows-latest stable --no-default-features	5m 47s
cfg-check	52s
test windows-latest stable	5m 44s
test windows-latest nightly --no-default-features	5m 23s
clippy	1m 11s
test windows-latest nightly	5m 9s
test windows-latest 1.76 --no-default-features	4m 34s
test windows-latest 1.76	4m 0s
docs	1m 28s
test ubuntu-latest stable --all-features	2m 58s
test ubuntu-latest nightly --all-features	2m 39s
fmt	11s
	1h 4m 53s

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