Fix issue with floating rotation button being in the wrong corner (sysui)

- Add option for the rotation button to be positioned to the right
  when in ROTATION_0

Bug: 265197526
Test: atest FloatingRotationButtonPositionCalculatorTest
Test: foldable-folded (floating rot button in sysui, natural rot=rot_0)
      foldable-unfolded (floating rot button in launcher, natural rot=rot_0)
      tablet (floating rot in launcher, natural rot=rot_270)
Change-Id: I1f7fb7953e2846c46c15473a7980ffd447956310
diff --git a/packages/SystemUI/res/values/config.xml b/packages/SystemUI/res/values/config.xml
index 1826c00..371f001 100644
--- a/packages/SystemUI/res/values/config.xml
+++ b/packages/SystemUI/res/values/config.xml
@@ -828,4 +828,8 @@
     <string name="config_wallpaperPickerPackage" translatable="false">
         com.android.wallpaper
     </string>
+    
+    <!-- Whether the floating rotation button should be on the left/right in the device's natural
+         orientation -->
+    <bool name="floating_rotation_button_position_left">true</bool>
 </resources>