fix(plugin-multi-tenant): corrects user type in userHasAccessToAllTenants fn (#10707)

### What?
User type was inflexible.

### How?
Internally use as unknown.

Author: JarrodMFlesch

packages/plugin-multi-tenant/src/types.ts

@@ -105,7 +105,7 @@ export type MultiTenantPluginConfig<ConfigTypes = unknown> = {
    * Useful for super-admin type users
    */
   userHasAccessToAllTenants?: (
-    user: ConfigTypes extends { user: User } ? ConfigTypes['user'] : User,
+    user: ConfigTypes extends { user: unknown } ? ConfigTypes['user'] : User,
   ) => boolean
 }
 

packages/plugin-multi-tenant/src/utilities/withTenantAccess.ts

@@ -31,7 +31,7 @@ export const withTenantAccess =
     if (
       args.req.user &&
       !userHasAccessToAllTenants(
-        args.req.user as ConfigType extends { user: User } ? ConfigType['user'] : User,
+        args.req.user as ConfigType extends { user: unknown } ? ConfigType['user'] : User,
       )
     ) {
       constraints.push(