allow fetch request without a config save (#26046)

Co-authored-by: Mattermost Build <build@mattermost.com>

webapp/channels/src/components/admin_console/admin_definition.tsx

@@ -4018,6 +4018,7 @@ const AdminDefinition: AdminDefinitionType = {
                                 it.stateEquals('SamlSettings.IdpMetadataURL', ''),
                             ),
                             sourceUrlKey: 'SamlSettings.IdpMetadataURL',
+                            skipSaveNeeded: true,
                         },
                         {
                             type: 'text',

webapp/channels/src/components/admin_console/schema_admin_settings.tsx

@@ -446,7 +446,7 @@ export class SchemaAdminSettings extends React.PureComponent<Props, State> {
         }
 
         const handleRequestAction = (success: () => void, error: (error: {message: string}) => void) => {
-            if (this.state.saveNeeded !== false) {
+            if (!setting.skipSaveNeeded && this.state.saveNeeded !== false) {
                 error({
                     message: this.props.intl.formatMessage({id: 'admin_settings.save_unsaved_changes', defaultMessage: 'Please save unsaved changes first'}),
                 });

webapp/channels/src/components/admin_console/types.ts

@@ -124,6 +124,7 @@ type AdminDefinitionSettingButton = AdminDefinitionSettingBase & {
     error_message: string | MessageDescriptor;
     success_message?: string | MessageDescriptor;
     sourceUrlKey?: string;
+    skipSaveNeeded?: boolean;
 }
 
 type AdminDefinitionSettingUsername = AdminDefinitionSettingBase & {