power-libperfmgr: Send LOAD_RESET on hint session creation

Replace current init behavior with a reset hint. This makes sense,
because creating a session is implicitly a "load reset" plus HWUI may
not always send a reset hint after its background refactor. This will
also reduce first-frame boost latency for new sessions.

Bug: 279505058
Test: manual
Change-Id: I5bdeedecbd4e0afb7d777be332e5dd9fb386e1ac

Author: AndroidMatt1

power-libperfmgr/aidl/PowerHintSession.cpp

@@ -132,7 +132,7 @@ PowerHintSession::PowerHintSession(int32_t tgid, int32_t uid, const std::vector<
     }
     PowerSessionManager::getInstance()->addPowerSession(this);
     // init boost
-    setSessionUclampMin(HintManager::GetInstance()->GetAdpfProfile()->mUclampMinInit);
+    sendHint(SessionHint::CPU_LOAD_RESET);
     ALOGV("PowerHintSession created: %s", mDescriptor->toString().c_str());
 }