Feat/change user email (#22213)

Co-authored-by: NFish <douxc512@gmail.com>
Co-authored-by: JzoNg <jzongcode@gmail.com>
Co-authored-by: Garfield Dai <dai.hai@foxmail.com>

api/services/feature_service.py

@@ -123,7 +123,7 @@ class FeatureModel(BaseModel):
     dataset_operator_enabled: bool = False
     webapp_copyright_enabled: bool = False
     workspace_members: LicenseLimitationModel = LicenseLimitationModel(enabled=False, size=0, limit=0)
-
+    is_allow_transfer_workspace: bool = True
     # pydantic configs
     model_config = ConfigDict(protected_namespaces=())
 
@@ -149,6 +149,7 @@ class SystemFeatureModel(BaseModel):
     branding: BrandingModel = BrandingModel()
     webapp_auth: WebAppAuthModel = WebAppAuthModel()
     plugin_installation_permission: PluginInstallationPermissionModel = PluginInstallationPermissionModel()
+    enable_change_email: bool = True
 
 
 class FeatureService:
@@ -186,6 +187,7 @@ class FeatureService:
         if dify_config.ENTERPRISE_ENABLED:
             system_features.branding.enabled = True
             system_features.webapp_auth.enabled = True
+            system_features.enable_change_email = False
             cls._fulfill_params_from_enterprise(system_features)
 
         if dify_config.MARKETPLACE_ENABLED:
@@ -228,6 +230,8 @@ class FeatureService:
 
         if features.billing.subscription.plan != "sandbox":
             features.webapp_copyright_enabled = True
+        else:
+            features.is_allow_transfer_workspace = False
 
         if "members" in billing_info:
             features.members.size = billing_info["members"]["size"]