Combine OTA and /data formatting

/data gets formatted to ext4 first and then
16 KB OTA is applied. Combine both steps into single
step. Apply OTA and wipe device when update engine
provides callback.

Test: atest -c Enable16KbTest
Flag: build.RELEASE_GOOGLE_TEGU_16K_DEVELOPER_OPTION
Bug: 402778695
Change-Id: I93d10b90525319c7f3f388d8e290504cb178cd30