Refactorings to the PAM conversation handling #2856

Job	Run time
build-and-test	1m 46s
compliance-tests-detect-changes	6s
check-bindings	1m 10s
build-and-test-msrv	59s
build-and-test-minimal	1m 8s
compliance-tests	5m 14s
e2e-tests	1m 19s
format	3s
clippy	21s
compliance-tests-lint	0s
compliance-tests-og	0s
audit	6s
docs	11s
miri	51s
	13m 14s

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