CrOS Settings: Update strings for Device Power subpage

This CL updates the strings for the Device Power subpage when the
feature OsSettingsRevampWayfinding is enabled. After the update, the `When idle` row only shows up when battery status is not present. The minimum height of the row is updated from 48px to 64px.

Feature enabled: https://screenshot.googleplex.com/7LwUPBjm2EKrqPf
Feature disabled: https://screenshot.googleplex.com/BWPf2sFweD4JTXH

Bug: b/293896466
Change-Id: I2ef1589595072f63aa02cc77b24a1a19753c616b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4811036
Commit-Queue: Connie Xu <conniekxu@chromium.org>
Reviewed-by: Wes Okuhara <wesokuhara@google.com>
Cr-Commit-Position: refs/heads/main@{#1188548}