Merge "Don't send thermal mitigation request to modem if not supported." am: c17eb3d1c8 am: 45494dcc2c am: 7788016689

Original change: https://android-review.googlesource.com/c/platform/packages/services/Telephony/+/1621947

Change-Id: I0cb1d2ee4fbdd6ee3063a0bb6273387869c3002f