feat(`provider`): instantiate recommended fillers by default #5719

Job	Run time
docs	53s
check no_std	35s
clippy	41s
doctest	40s
feature-checks	39s
fmt	12s
test ubuntu-latest stable --no-default-features	25s
wasm-wasi	23s
wasm-unknown	37s
test ubuntu-latest stable	28s
test ubuntu-latest stable --all-features	37s
test ubuntu-latest nightly --no-default-features	45s
test ubuntu-latest nightly	50s
test ubuntu-latest nightly --all-features	44s
test ubuntu-latest 1.81 --no-default-features	25s
test ubuntu-latest 1.81	40s
test windows-latest stable --no-default-features	33s
test windows-latest stable	26s
test windows-latest stable --all-features	30s
test windows-latest nightly --no-default-features	25s
test windows-latest nightly	26s
test windows-latest nightly --all-features	25s
test windows-latest 1.81 --no-default-features	23s
test windows-latest 1.81	23s
deny / cargo deny check	25s
ci success	1s
	13m 31s

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