SF should use display fps and not vsync rate as refresh rate

Test: `adb shell dumpsys SurfaceFlinger | grep -E "VSYNC period|refresh-rate"`
BUG: 334740737
Change-Id: I77354db6351125f96cbb37e6e75877f533879952
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 14dfdf5..e28804d 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -6876,24 +6876,23 @@
     StringAppendF(&result, "  transaction-flags         : %08x\n", mTransactionFlags.load());
 
     if (const auto display = getDefaultDisplayDeviceLocked()) {
-        std::string fps, xDpi, yDpi;
-        if (const auto activeModePtr =
-                    display->refreshRateSelector().getActiveMode().modePtr.get()) {
-            fps = to_string(activeModePtr->getVsyncRate());
-
+        std::string peakFps, xDpi, yDpi;
+        const auto activeMode = display->refreshRateSelector().getActiveMode();
+        if (const auto activeModePtr = activeMode.modePtr.get()) {
+            peakFps = to_string(activeMode.modePtr->getPeakFps());
             const auto dpi = activeModePtr->getDpi();
             xDpi = base::StringPrintf("%.2f", dpi.x);
             yDpi = base::StringPrintf("%.2f", dpi.y);
         } else {
-            fps = "unknown";
+            peakFps = "unknown";
             xDpi = "unknown";
             yDpi = "unknown";
         }
         StringAppendF(&result,
-                      "  refresh-rate              : %s\n"
+                      "  peak-refresh-rate         : %s\n"
                       "  x-dpi                     : %s\n"
                       "  y-dpi                     : %s\n",
-                      fps.c_str(), xDpi.c_str(), yDpi.c_str());
+                      peakFps.c_str(), xDpi.c_str(), yDpi.c_str());
     }
 
     StringAppendF(&result, "  transaction time: %f us\n", inTransactionDuration / 1000.0);