[PM-5149] unique SP entity id for organization sso configs (#3520)

* org specific sp entity id

* updates

* dont default true

src/Core/Auth/Models/Data/SsoConfigurationData.cs

@@ -70,6 +70,7 @@ public class SsoConfigurationData
     public bool IdpWantAuthnRequestsSigned { get; set; }
 
     // SAML2 SP
+    public bool SpUniqueEntityId { get; set; }
     public Saml2NameIdFormat SpNameIdFormat { get; set; }
     public string SpOutboundSigningAlgorithm { get; set; }
     public Saml2SigningBehavior SpSigningBehavior { get; set; }