fix(protocol): fix BridgedERC20V2.sol initializer logic

[dantaik]

BridgedERC20V2 could not be used to upgrade BridgedERC20 without the new init2() function. I also changed init() to mark implementation as version 2 so contract upgraded from BridgedERC20 will have the same version number as newly deployed BridgedERC20V2.

[openzeppelin-code]

fix(protocol): fix BridgedERC20V2.sol initializer logic

Generated at commit: 71a86c86112631bd0ee4c41d238107186c6b6677

🚨 Report Summary

	Severity Level	Results
Contracts	Critical High Medium Low Note Total	2 2 0 8 42 54
Dependencies	Critical High Medium Low Note Total	0 0 0 0 0 0

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