SF: fix binder thread priority

Add setMinSchedulerPolicy to all binder interfaces SF exposes.
It was missing from gui::ISurfaceComposer and
gui::IDisplayEventConnection.

Test: presubmit
Bug: 299378819
Change-Id: Ia0d99efa5a3bc58625c320d4df3c08bb597d2e38
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 42825f7..a5a2341 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -1581,8 +1581,9 @@
                                           gui::WindowInfosListenerInfo* outInfo) override;
     binder::Status removeWindowInfosListener(
             const sp<gui::IWindowInfosListener>& windowInfosListener) override;
-    binder::Status getStalledTransactionInfo(int pid,
-                                             std::optional<gui::StalledTransactionInfo>* outInfo);
+    binder::Status getStalledTransactionInfo(
+            int pid, std::optional<gui::StalledTransactionInfo>* outInfo) override;
+    binder::Status getSchedulingPolicy(gui::SchedulingPolicy* outPolicy) override;
 
 private:
     static const constexpr bool kUsePermissionCache = true;