profcollect: Reduce background processing job priority

The processing job is non-critical but quite CPU intensive. Reducing
priority allows the system to throttle the job more aggresively.

Test: presubmit
Bug: 241948742
Change-Id: Ie7aa921dec1aa1f4f8582041dae1679950f4d868

services/profcollect/src/com/android/server/profcollect/ProfcollectForwardingService.java

@@ -205,6 +205,7 @@ public final class ProfcollectForwardingService extends SystemService {
                     .setRequiresDeviceIdle(true)
                     .setRequiresCharging(true)
                     .setPeriodic(BG_PROCESS_PERIOD)
+                    .setPriority(JobInfo.PRIORITY_MIN)
                     .build());
         }