fix: simplify APIEndpoints() usage (#12893)

improvements include

- skip IPv6 correctly
- do not set default value for
  MINIO_SERVER_URL, let it be
  configured if not use local IPs

Bonus:

- In healing return error from listPathRaw()
- update console to v0.8.3

cmd/server-startup-msg_test.go

@@ -58,7 +58,7 @@ func TestStripStandardPorts(t *testing.T) {
 
 	apiEndpoints = []string{"http://%%%%%:9000"}
 	newAPIEndpoints = stripStandardPorts(apiEndpoints, "")
-	if !reflect.DeepEqual([]string{""}, newAPIEndpoints) {
+	if !reflect.DeepEqual(apiEndpoints, newAPIEndpoints) {
 		t.Fatalf("Expected %#v, got %#v", apiEndpoints, newAPIEndpoints)
 	}