fix(magnification settings): create flag for restoring button status

Bug: 325567876
Test: N/A
Flag: ACONFIG com.android.systemui.save_and_restore_magnification_settings_buttons DEVELOPMENT
Change-Id: I11a9a33ff2b10648d969472e06af6830ab35330b
diff --git a/packages/SystemUI/aconfig/accessibility.aconfig b/packages/SystemUI/aconfig/accessibility.aconfig
index 47b8630..55edff6 100644
--- a/packages/SystemUI/aconfig/accessibility.aconfig
+++ b/packages/SystemUI/aconfig/accessibility.aconfig
@@ -71,3 +71,13 @@
     description: "Animates the floating menu's transition between curved and jagged edges."
     bug: "281140482"
 }
+
+flag {
+    name: "save_and_restore_magnification_settings_buttons"
+    namespace: "accessibility"
+    description: "Saves the selected button status in magnification settings and restore the status when revisiting the same smallest screen DP."
+    bug: "325567876"
+    metadata {
+      purpose: PURPOSE_BUGFIX
+    }
+}