Darwin: DNS service connection reset on interface changes

[dtodor]

Shouldn't this read ResetSharedConnection instead of StartSharedConnection:

connectedhomeip/src/platform/Darwin/DnssdHostNameRegistrar.cpp

Line 275 in 49d7b42

ReturnOnFailure(StartSharedConnection());

The callback will be invoked on interface changes and will fail since the connection already exists.

[vivien-apple]

As you may have guessed I have written the code for this method but apparently I did a typo while cleaning up my changes. Thanks for catching it!