Avoid recreating activity when rotating the display.

Reference:
https://developer.android.com/guide/topics/resources/runtime-changes#HandlingTheChange

Bug: b/193828422
Change-Id: I4caa80941e4d32bdf5c830985a19536efd041069
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3032150
Reviewed-by: Cody Northrop <cnorthrop@google.com>
Reviewed-by: Charlie Lao <cclao@google.com>
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Cody Northrop <cnorthrop@google.com>

src/tests/test_utils/runner/android/java/AndroidManifest.xml.jinja2

@@ -33,7 +33,7 @@ found in the LICENSE file.
         <uses-library android:name="android.test.runner"/>
         <activity android:name=".AngleUnitTestActivity"
                 android:label="NativeTest"
-                android:configChanges="orientation|keyboardHidden"
+                android:configChanges="orientation|screenSize|screenLayout|keyboardHidden"
                 android:process=":test_process">
             {% if is_component_build == 'true' %}
             <meta-data android:name="android.app.lib_name"