settings: Fix navigation after actions/dispatch refactor.
settings: Fix navigation after actions/dispatch refactor.

In a4b9789c2 "settings card: Use standard Redux dispatch.", a function
call was mistakenly dropped -- we wrapped each of these expressions in
a lambda without inserting the corresponding call to correct for it.
The effect was that these buttons just didn't do anything, so it
wasn't possible to reach the inner settings screens.

vishwesh3/zulip-mobile,vishwesh3/zulip-mobile,vishwesh3/zulip-mobile,vishwesh3/zulip-mobile