HEXENS Audit (2024-02-12)

[FIXED]
PLFD-10: Incorrect maxIssuance check may block funds until the risk manager takes action
commit: 1737f0

[ACK]
PLFD-3: Unused init function
comment: __PolygonBridgeBase_init is leave it as is so others can use it.

[FIXED]
PLFD-8: Redundant usage of SafeERC20
commit: d76b36

[FIXED]
PLFD-9: Missing address zero check
commit: fd5e2f