Set test mission 1 marker file permissions

Allow the test mission 1 marker file to be read by anyone.
Also, add demo flags as a static lib dependency, so they become
available to codegen. Finally, delete storage marker file when migration
is disabled.

Bug: 328444881
Test: m
Change-Id: I81c643ce0121b0718692fd23f5b06a2b641f2b1e
diff --git a/packages/SettingsProvider/Android.bp b/packages/SettingsProvider/Android.bp
index bf4f60d..5ff5ceb 100644
--- a/packages/SettingsProvider/Android.bp
+++ b/packages/SettingsProvider/Android.bp
@@ -32,6 +32,7 @@
         "unsupportedappusage",
     ],
     static_libs: [
+        "aconfig_demo_flags_java_lib",
         "device_config_service_flags_java",
         "libaconfig_java_proto_lite",
         "SettingsLibDeviceStateRotationLock",