chore(provider): simplify nonce filler #3000

Job	Run time
docs	1m 0s
cfg-check	30s
clippy	53s
doctest	1m 2s
fmt	13s
feature-checks	2m 51s
no-std	25s
wasm-unknown	34s
wasm-wasi	1m 2s
test ubuntu-latest stable --no-default-features	1m 12s
test ubuntu-latest stable	1m 27s
test ubuntu-latest nightly --no-default-features	1m 9s
test ubuntu-latest nightly	1m 13s
test ubuntu-latest 1.76 --no-default-features	33s
test ubuntu-latest 1.76	1m 2s
test windows-latest stable --no-default-features	5m 26s
test windows-latest stable	4m 54s
test windows-latest nightly --no-default-features	3m 48s
test windows-latest nightly	4m 39s
test windows-latest 1.76 --no-default-features	3m 15s
test windows-latest 1.76	3m 3s
	40m 11s

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