fix(server): use new LocalWorkspace ServerFeature instead (#13091)

keep compatibility

close AF-2720



#### PR Dependency Tree


* **PR #13091** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

## Summary by CodeRabbit

* **New Features**
* Added a new `LocalWorkspace` feature flag to server configuration,
enabling more flexible feature management.

* **Deprecations**
* The `allowGuestDemoWorkspace` flag is now deprecated and will be
removed in version 0.25.0. Please use the `features` array for feature
checks instead.

* **Bug Fixes**
* Updated UI and logic throughout the app to rely on the new
`LocalWorkspace` feature flag rather than the deprecated boolean flag.

* **Chores**
* Removed references to `allowGuestDemoWorkspace` from configuration,
queries, and type definitions for improved consistency.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->


#### PR Dependency Tree


* **PR #13091** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

packages/common/graphql/src/graphql/admin/admin-server-config.gql

@@ -7,7 +7,6 @@ query adminServerConfig {
     baseUrl
     name
     features
-    allowGuestDemoWorkspace
     type
     initialized
     credentialsRequirement {

packages/common/graphql/src/graphql/index.ts

@@ -79,7 +79,6 @@ export const adminServerConfigQuery = {
     baseUrl
     name
     features
-    allowGuestDemoWorkspace
     type
     initialized
     credentialsRequirement {
@@ -2090,7 +2089,6 @@ export const serverConfigQuery = {
     baseUrl
     name
     features
-    allowGuestDemoWorkspace
     type
     initialized
     credentialsRequirement {

packages/common/graphql/src/graphql/server-config.gql

@@ -7,7 +7,6 @@ query serverConfig {
     baseUrl
     name
     features
-    allowGuestDemoWorkspace
     type
     initialized
     credentialsRequirement {

packages/common/graphql/src/schema.ts

@@ -2349,7 +2349,10 @@ export enum SearchTable {
 
 export interface ServerConfigType {
   __typename?: 'ServerConfigType';
-  /** Whether allow guest users to create demo workspaces. */
+  /**
+   * Whether allow guest users to create demo workspaces.
+   * @deprecated This field is deprecated, please use `features` instead. Will be removed in 0.25.0
+   */
   allowGuestDemoWorkspace: Scalars['Boolean']['output'];
   /** fetch latest available upgradable release of server */
   availableUpgrade: Maybe<ReleaseVersionType>;
@@ -2383,6 +2386,7 @@ export enum ServerFeature {
   Copilot = 'Copilot',
   CopilotEmbedding = 'CopilotEmbedding',
   Indexer = 'Indexer',
+  LocalWorkspace = 'LocalWorkspace',
   OAuth = 'OAuth',
   Payment = 'Payment',
 }
@@ -2964,7 +2968,6 @@ export type AdminServerConfigQuery = {
     baseUrl: string;
     name: string;
     features: Array<ServerFeature>;
-    allowGuestDemoWorkspace: boolean;
     type: ServerDeploymentType;
     initialized: boolean;
     availableUserFeatures: Array<FeatureType>;
@@ -5736,7 +5739,6 @@ export type ServerConfigQuery = {
     baseUrl: string;
     name: string;
     features: Array<ServerFeature>;
-    allowGuestDemoWorkspace: boolean;
     type: ServerDeploymentType;
     initialized: boolean;
     credentialsRequirement: {