fix: case changes on org domain (#9196)

# Which Problems Are Solved

Organization name change results in domain events even if the domain
itself doesn't change.

# How the Problems Are Solved

Check if the domain itself really changes, and if not, don't create the
events.

# Additional Changes

Unittest for this specific case.

# Additional Context

None

internal/command/org_domain.go

@@ -334,6 +334,10 @@ func (c *Commands) changeDefaultDomain(ctx context.Context, orgID, newName strin
 				if err != nil {
 					return nil, err
 				}
+				// rename of organization resulting in no change in the domain
+				if newDefaultDomain == defaultDomain {
+					return nil, nil
+				}
 				events := []eventstore.Command{
 					org.NewDomainAddedEvent(ctx, orgAgg, newDefaultDomain),
 					org.NewDomainVerifiedEvent(ctx, orgAgg, newDefaultDomain),

internal/command/org_test.go

@@ -702,6 +702,54 @@ func TestCommandSide_ChangeOrg(t *testing.T) {
 			},
 			res: res{},
 		},
+		{
+			name: "change org name case verified, with primary",
+			fields: fields{
+				eventstore: eventstoreExpect(
+					t,
+					expectFilter(
+						eventFromEventPusher(
+							org.NewOrgAddedEvent(context.Background(),
+								&org.NewAggregate("org1").Aggregate,
+								"org"),
+						),
+					),
+					expectFilter(
+						eventFromEventPusher(
+							org.NewOrgAddedEvent(context.Background(),
+								&org.NewAggregate("org1").Aggregate,
+								"org"),
+						),
+						eventFromEventPusher(
+							org.NewDomainAddedEvent(context.Background(),
+								&org.NewAggregate("org1").Aggregate,
+								"org.zitadel.ch"),
+						),
+						eventFromEventPusher(
+							org.NewDomainVerifiedEvent(context.Background(),
+								&org.NewAggregate("org1").Aggregate,
+								"org.zitadel.ch"),
+						),
+						eventFromEventPusher(
+							org.NewDomainPrimarySetEvent(context.Background(),
+								&org.NewAggregate("org1").Aggregate,
+								"org.zitadel.ch"),
+						),
+					),
+					expectPush(
+						org.NewOrgChangedEvent(context.Background(),
+							&org.NewAggregate("org1").Aggregate, "org", "ORG",
+						),
+					),
+				),
+			},
+			args: args{
+				ctx:   http_util.WithRequestedHost(context.Background(), "zitadel.ch"),
+				orgID: "org1",
+				name:  "ORG",
+			},
+			res: res{},
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {