Revert "[US] Bypass DND for critical alerts and provide toggle for overriding DND"

This reverts commit 896441c993f03ebf71c7a32e561c48acf2184b3c.

Reason for revert: This CL is for M-2025-06 (not M-2025-05)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:5fbffa73a9c4d76569ed533d64388046ab1bd708)
Merged-In: I2e705837438853b2db3eb006da04da714905f3ec
Change-Id: I2e705837438853b2db3eb006da04da714905f3ec
3 files changed