Remove PDM dependency from PayDM

Removes the PDM parameter from the PayDM's constructor and instead just
passes in a repeating callback to notify observers. It also changes the
PaymentsDataCleaner's PDM dependency to a PayDM dependency, making it
the first class that only depends on one of ADM/PayDM rather than the
full PDM.

This allows getting rid of some friend declarations!

Bug: b/322170538
Change-Id: I158fb9adbee8b0157b2557247a9ecc38751edcbc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5427894


Reviewed-by: Jihad Hanna <jihadghanna@google.com>
Commit-Queue: Florian Leimgruber <fleimgruber@google.com>
Cr-Commit-Position: refs/heads/main@{#1283067}