App anomaly tips on PowerUsage App list

Screenshots:
[in bg - banner] https://screenshot.googleplex.com/MzLC6LfX93TkkYf
[in bg - hints] https://screenshot.googleplex.com/9JLXNsRiVG8arAU
[in fg - banner] https://screenshot.googleplex.com/9oYbwUkeeLbQX2t
[in fg - hints] https://screenshot.googleplex.com/53DTTUCUnf8rsoE
[apps anomaly highlight hint + settings anomaly banner]
https://screenshot.googleplex.com/8NdS2VMrSzwv2DM

Bug: 291689643
Bug: 291689623
Test: manual
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:bfd0f5859b6e5ffef4727ee562009f2050de7a58)
Change-Id: Ic02db49cb3794ef134759d9dcec5f5ef32454a95