Update UI when TARE settings revert to default

When the TARE revert to default button is clicked, the TARE homepage
updates to the value of the DEFAULT_ENABLE_TARE global variable with this code.

Bug: 195543827

Test: Manual (Settings -> developer options -> TARE -> click revert to
default settings and see the page disabled)

Change-Id: Ia4d126d97ebfb35fbf831bb29cee302acad92e7c
1 file changed