[PM-19029][PM-19203] Addressing UserService tech debt around ITwoFactorIsEnabledQuery (#5754)

* fix : split out the interface from the TwoFactorAuthenticationValidator into separate file.
* fix: replacing IUserService.TwoFactorEnabled with ITwoFactorEnabledQuery
* fix: combined logic for both bulk and single user look ups for TwoFactorIsEnabledQuery.
* fix: return two factor provider enabled on CanGenerate() method.

* tech debt: modfifying MFA providers to call the database less to validate if two factor is enabled. 
* tech debt: removed unused service from AuthenticatorTokenProvider

* doc: added documentation to ITwoFactorProviderUsers
* doc: updated comments for TwoFactorIsEnabled impl

* test: fixing tests for ITwoFactorIsEnabledQuery
* test: updating tests to have correct DI and removing test for automatic email of TOTP.
* test: adding better test coverage

src/Core/Repositories/IUserRepository.cs

@@ -25,6 +25,16 @@ public interface IUserRepository : IRepository<User, Guid>
     /// </summary>
     Task<IEnumerable<UserWithCalculatedPremium>> GetManyWithCalculatedPremiumAsync(IEnumerable<Guid> ids);
     /// <summary>
+    /// Retrieves the data for the requested user ID and includes additional property indicating
+    /// whether the user has premium access directly or through an organization.
+    ///
+    /// Calls the same stored procedure as GetManyWithCalculatedPremiumAsync but handles the query
+    /// for a single user.
+    /// </summary>
+    /// <param name="userId">The user ID to retrieve data for.</param>
+    /// <returns>User data with calculated premium access; null if nothing is found</returns>
+    Task<UserWithCalculatedPremium?> GetCalculatedPremiumAsync(Guid userId);
+    /// <summary>
     /// Sets a new user key and updates all encrypted data.
     /// <para>Warning: Any user key encrypted data not included will be lost.</para>
     /// </summary>