Implicit rejection api for PKCS#1 v1.5 decryption #1273

Job	Run time
nightly	1m 8s
build (1.85.0, wasm32-unknown-unknown)	23s
test (1.85.0)	5m 21s
test (stable)	5m 8s
build (1.85.0, thumbv7em-none-eabi)	25s
build (stable, thumbv7em-none-eabi)	21s
build (stable, wasm32-unknown-unknown)	27s
minimal-versions	-1s
	13m 12s

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