[AIP-101][Discussion] Safe onchain key rotation address mapping for standard accounts

[thepomeranian]

AIP Discussion

Summary

The onchain key rotation address mapping has functional issues which inhibit
safe mapping of authentication key to originating address for standard accounts.
This proposal resolves these issues by adding assorted checks and extra function logic.

Read more about it here: https://github.com/aptos-foundation/AIPs/blob/main/aips/aip-101.md