Adjust skus sdk/vpn features state

Made skus sdk enabled by default and vpn feature available on beta.

Fixes brave/brave-browser#21598

Author: simonhong

chromium_src/chrome/browser/unexpire_flags.cc

@@ -21,8 +21,7 @@ bool IsFlagExpired(const flags_ui::FlagsStorage* storage,
   version_info::Channel channel = chrome::GetChannel();
   // Enable VPN feature only for nightly/development.
   if (base::LowerCaseEqualsASCII(kBraveVPNFeatureInternalName, internal_name) &&
-      (channel == version_info::Channel::STABLE ||
-       channel == version_info::Channel::BETA)) {
+      channel == version_info::Channel::STABLE) {
     return true;
   }
 #endif

components/skus/common/features.cc

@@ -10,14 +10,8 @@
 namespace skus {
 namespace features {
 
-const base::Feature kSkusFeature {
-  "SkusFeature",
-#if defined(OS_IOS)
-      base::FEATURE_ENABLED_BY_DEFAULT
-#else
-      base::FEATURE_DISABLED_BY_DEFAULT
-#endif
-};
+const base::Feature kSkusFeature{"SkusFeature",
+                                 base::FEATURE_ENABLED_BY_DEFAULT};
 
 }  // namespace features
 }  // namespace skus