fix(app-policy): clear the regional "unchecked" badge in the desktop layout (#75)

ApplyDesktopAppPolicy pins a whole app policy through
FStringAppConfigurationOverrideAppPolicy so a later GUAC response cannot
replace the desktop layout. On a first launch that snapshot is the APK's
bundled GuacDefaultPolicy-GlobalDist.json, which ships
"ShowUncheckedBadge": true.

Because the override is permanent, the account's own GUAC policy never
gets a chance to correct it: on a signed-in profile the cached
GUAC:-1:app-policy stays byte-identical to the bundled default plus the
keys NormalizeDesktopLayout writes.

That field gates the badge rendered next to the display name in the
top-bar user-info widget and in the flyout profile card, labelled
CommonUI.Features.Label.Unchecked ("not verified"), so verified accounts
are permanently marked unverified. The desktop chrome has no such badge.

src/runtime/roblox_desktop_app_policy.cc

@@ -189,6 +189,7 @@ void NormalizeDesktopLayout(nlohmann::json* policy) {
   (*policy)["SystemBarPlacement"] = "Left";
   (*policy)["ShouldSystemBarUsuallyBePresent"] = true;
   (*policy)["DevicePreferencesPersistentPresenceVariant"] = "windows";
+  (*policy)["ShowUncheckedBadge"] = false;
 }
 
 bool DecodePolicy(const nlohmann::json& encoded, nlohmann::json* policy) {

tests/roblox_desktop_app_policy_test.cc

@@ -73,6 +73,7 @@ void ExpectDesktopLayout(const nlohmann::json& policy) {
   EXPECT_EQ(policy["SystemBarPlacement"], "Left");
   EXPECT_EQ(policy["ShouldSystemBarUsuallyBePresent"], true);
   EXPECT_EQ(policy["DevicePreferencesPersistentPresenceVariant"], "windows");
+  EXPECT_EQ(policy["ShowUncheckedBadge"], false);
 }
 
 TEST(RobloxDesktopAppPolicyTest,
@@ -86,7 +87,7 @@ TEST(RobloxDesktopAppPolicyTest,
   const nlohmann::json original_policy = {
       {"PlatformGroup", "Unknown"},       {"UseGridHomePage", nullptr},
       {"SystemBarPlacement", "Bottom"},   {"EligibleForVideoCapture", false},
-      {"AccountOwnedMarker", "preserve"},
+      {"ShowUncheckedBadge", true},       {"AccountOwnedMarker", "preserve"},
   };
   const nlohmann::json configurations = {
       {"GUAC:42:app-policy", original_policy.dump()},