Remove functionality to disable feature flags

.env.template

@@ -391,9 +391,8 @@
 # AUTHENTICATOR_DISABLE_TIME_DRIFT=false
 
 ## Client Settings
-## En- or disable experimental feature flags for clients.
-## This is a comma-separated list of flags, e.g. "flag1,flag2,^flag3".
-## To disable a feature prepend a caret (^) to the flag name.
+## Enable experimental feature flags for clients.
+## This is a comma-separated list of flags, e.g. "flag1,flag2,flag3".
 ##
 ## The following flags are available:
 ## - "autofill-overlay": Add an overlay menu to form fields for quick access to credentials.

src/config.rs

@@ -547,10 +547,8 @@ make_config! {
         /// TOTP codes of the previous and next 30 seconds will be invalid.
         authenticator_disable_time_drift: bool, true, def, false;
 
-        /// Customize the enabled feature flags on the clients |> This is a comma separated list of feature flags to en-/disable.
-        /// Features are enabled by default which can be overridden by prefixing the feature with a `^`.
-        /// Autofill v2 is disabled by default because it is causing issues https://github.com/dani-garcia/vaultwarden/discussions/4052
-        experimental_client_feature_flags: String, false, def, "^autofill-v2,fido2-vault-credentials".to_string();
+        /// Customize the enabled feature flags on the clients |> This is a comma separated list of feature flags to enable.
+        experimental_client_feature_flags: String, false, def, "fido2-vault-credentials".to_string();
 
         /// Require new device emails |> When a user logs in an email is required to be sent.
         /// If sending the email fails the login attempt will fail.
@@ -760,7 +758,7 @@ fn validate_config(cfg: &ConfigItems) -> Result<(), Error> {
         &["autofill-overlay", "autofill-v2", "browser-fileless-import", "fido2-vault-credentials"];
     for flag in parse_experimental_client_feature_flags(&cfg.experimental_client_feature_flags).keys() {
         if !KNOWN_FLAGS.contains(&flag.as_str()) {
-            err!(format!("The experimental client feature flag {flag:?} is unrecognized. Please ensure the feature flag is spelled correctly, a caret (^) is used for disabling and that it is supported in this version."));
+            err!(format!("The experimental client feature flag {flag:?} is unrecognized. Please ensure the feature flag is spelled correctly and that it is supported in this version."));
         }
     }
 

src/util.rs

@@ -756,13 +756,7 @@ pub fn parse_experimental_client_feature_flags(experimental_client_feature_flags
     let mut feature_states: HashMap<String, bool> = HashMap::new();
 
     for feature in features {
-        let is_enabled = !feature.starts_with('^');
-        let flag = if is_enabled {
-            feature
-        } else {
-            &feature[1..]
-        };
-        feature_states.insert(flag.to_string(), is_enabled);
+        feature_states.insert(feature.to_string(), true);
     }
 
     feature_states