chore(console): remove first and lastName fallback from user (#5629)

* chore(console): remove first and lastName fallback from user

* use display name and ensure it's set without required name fields

* add user type to user grant and memberships responses

* contributor, members

* fix avatar display checks

---------

Co-authored-by: Livio Spring <livio.a@gmail.com>

proto/zitadel/auth.proto

@@ -1466,6 +1466,11 @@ message UserGrant {
             example: "[\"RoleKey1\", \"RoleKey2\"]",
         }
     ];
+    zitadel.user.v1.Type user_type = 12 [
+        (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_field) = {
+            description: "type of the user (human / machine)"
+        }
+    ];
 }
 
 message ListMyProjectOrgsRequest {

proto/zitadel/member.proto

@@ -1,6 +1,7 @@
 syntax = "proto3";
 
 import "zitadel/object.proto";
+import "zitadel/user.proto";
 import "validate/validate.proto";
 import "protoc-gen-openapiv2/options/annotations.proto";
 
@@ -57,6 +58,11 @@ message Member {
             example: "\"https://api.zitadel.ch/assets/v1/avatar-32432jkh4kj32\"";
         }
     ];
+    zitadel.user.v1.Type user_type = 10 [
+        (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_field) = {
+            description: "type of the user (human / machine)"
+        }
+    ];
 }
 
 message SearchQuery {

proto/zitadel/user.proto

@@ -723,6 +723,11 @@ message UserGrant {
             example: "\"gigi@zitadel.com\"";
         }
     ];
+    Type user_type = 19 [
+        (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_field) = {
+            description: "type of the user (human / machine)"
+        }
+    ];
 }
 
 enum UserGrantState {