feat: Add Messenger parent
parameter
#6142
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Explanation
Add the
parent
constructor parameter to theMessenger
class for automatic delegation of all capabilities under that messenger's namespace. This significantly reduces boilerplate, making the messenger easier to use in a similar manner to how the oldRestrictedMessenger
class wored.See this ADR PR for details: MetaMask/decisions#53
References
Depends upon #6132
Relates to #5626
Checklist