Use -Xjvm-default=all instead of -Xjvm-default=enable or @JvmDefault

The @JvmDefault annotation and -Xjvm-default=enable argument are both
removed from kotlinc 1.9.0 in favor of -Xjvm-default=all.

Bug: 291335478
Test: builds
Change-Id: I473e578b92482fbd6c8812c4d32acc1a4c27a84a
diff --git a/packages/EasterEgg/Android.bp b/packages/EasterEgg/Android.bp
index 8699f59..0caf505 100644
--- a/packages/EasterEgg/Android.bp
+++ b/packages/EasterEgg/Android.bp
@@ -70,5 +70,5 @@
 
     manifest: "AndroidManifest.xml",
 
-    kotlincflags: ["-Xjvm-default=enable"],
+    kotlincflags: ["-Xjvm-default=all"],
 }