No it won't. #144 addresses how the UnbondingTime value is computed and then stored in the consumer states.
However this value will still be compared to the consumer client default config which is hardcoded to a 3 weeks duration in the IBC-GO tests. line
Consumer chain clients should be initialized using the UnbondingTime value rather than using the default IBC-GO testing value.
https://github.com/cosmos/interchain-security/blob/404529c8866c007bb02ba1309a249e369979486f/x/ccv/provider/provider_test.go#L92
NewPath
The following ibc-go condition makes the tests fail when these values aren't equal :