Suppress DEPRECATION warnings for checking scaledDensity on some tests (#54278)

Summary:
Suppress DEPRECATION warnings for checking scaledDensity on some tests.

## Changelog:

[Internal] Suppress DEPRECATION warnings for checking scaledDensity on some tests.

Pull Request resolved: #54278

Test Plan: none

Reviewed By: cipolleschi, fabriziocucci

Differential Revision: D85554602

Pulled By: javache

fbshipit-source-id: 26a8e6a4c658581dbf17358f7b1a791513fb1933

Author: kdwkr

packages/react-native/ReactAndroid/src/test/java/com/facebook/react/uimanager/DisplayMetricsHolderTest.kt

@@ -5,6 +5,9 @@
  * LICENSE file in the root directory of this source tree.
  */
 
+// Suppress deprecation warnings for checking scaledDensity
+@file:Suppress("DEPRECATION")
+
 package com.facebook.react.uimanager
 
 import android.annotation.TargetApi

packages/react-native/ReactAndroid/src/test/java/com/facebook/react/uimanager/PixelUtilTest.kt

@@ -5,6 +5,9 @@
  * LICENSE file in the root directory of this source tree.
  */
 
+// Suppress deprecation warnings for checking scaledDensity
+@file:Suppress("DEPRECATION")
+
 package com.facebook.react.uimanager
 
 import android.content.Context