SF: Rename RefreshRateConfigs

"Configs" is vague and overloaded, and collections thereof cannot simply
pluralize the name. Also, update the stale class comment.

Bug: 241285191
Test: Build
Change-Id: I3b6d2259dcaa390f44c07caa07c05361c6cb428b
diff --git a/services/surfaceflinger/Android.bp b/services/surfaceflinger/Android.bp
index b65f1b4..cb54cad 100644
--- a/services/surfaceflinger/Android.bp
+++ b/services/surfaceflinger/Android.bp
@@ -180,7 +180,7 @@
         "Scheduler/LayerHistory.cpp",
         "Scheduler/LayerInfo.cpp",
         "Scheduler/MessageQueue.cpp",
-        "Scheduler/RefreshRateConfigs.cpp",
+        "Scheduler/RefreshRateSelector.cpp",
         "Scheduler/Scheduler.cpp",
         "Scheduler/VSyncDispatchTimerQueue.cpp",
         "Scheduler/VSyncPredictor.cpp",