Wipe /data with ext4 before 16K OTA

16K developer option needs /data partition to be ext4. Wipe
the /data and reformat it to ext4 using RecoverySystem.

Test: m Settings && adb install -r $ANDROID_PRODUCT_OUT/system_ext/priv-app/Settings/Settings.apk
Test: adb shell cat /proc/mounts | grep f2fs
Bug: 295035851
Bug: 320700993
Change-Id: I7ca6f3a7e18d6dbe4e9791b3c83d149365941989