feat(svm): N-01 Incomplete or Misleading Comments

[md0x]

Changes proposed in this PR:

• Fixes the following issue identified by Open Zeppelin:

Throughout the codebase, multiple instances of incomplete or misleading comments were identified:
This comment above unsafe_deposit_v3 states that the deposit_nonce is not used to derive the deposit_id, whereas it is so used.

This comment above execute_relayer_refund_leaf states that it can only be called by the owner, whereas it can be called by anyone. For context, relay_root_bundle is the admin function where the admin provides the latest root bundles and increments the bundle ID within the program state.

This comment above execute_relayer_refund_leaf states that the structure and validation of the leaf are defined in the UMIP, but there is no link or number of the UMIP.

Fixes ACX-3577

[linear]

ACX-3577 address SVM audit issues

[chrismaree]

great.