fix: revert feature key for configs back to ConsoleUseV2UserApi (#11928)

# Which Problems Are Solved

https://github.com/zitadel/zitadel/pull/11390 renamed "Console" to
"Management Console". While
https://github.com/zitadel/zitadel/pull/11706 already reverted an
unintended rename of the feature key to enable the management console to
use the V2 API for user creation. It was now also discovered that the
rename of the feature itself also broke existing (default)
configurations.

# How the Problems Are Solved

Added a `mapstructure` tag on the instance feature to handle existing
configs.

# Additional Changes

Removed unused `TokenExchange` from the default configuration.

# Additional Context

- relates to #11390 
- relates to #11706
- requires backport to v4.x

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Marco A. <marco@zitadel.com>

cmd/defaults.yaml

@@ -1320,7 +1320,6 @@ DefaultInstance:
   Features:
     LoginDefaultOrg: true # ZITADEL_DEFAULTINSTANCE_FEATURES_LOGINDEFAULTORG
     UserSchema: # ZITADEL_DEFAULTINSTANCE_FEATURES_USERSCHEMA
-    TokenExchange: # ZITADEL_DEFAULTINSTANCE_FEATURES_TOKENEXCHANGE
     ImprovedPerformance: # ZITADEL_DEFAULTINSTANCE_FEATURES_IMPROVEDPERFORMANCE
     # https://github.com/zitadel/zitadel/blob/main/internal/feature/feature.go#L64-L68
     #   - 1 # OrgByID

cmd/setup/config_test.go

@@ -40,6 +40,7 @@ DefaultInstance:
   Features:
     LoginDefaultOrg: true
     UserSchema: true
+    ConsoleUseV2UserApi: true
     LoginV2:
       Required: true
       BaseURI: 'http://zitadel:8080'
@@ -51,8 +52,9 @@ Actions:
 `},
 		want: func(t *testing.T, config *Config) {
 			assert.Equal(t, config.DefaultInstance.Features, &command.InstanceFeatures{
-				LoginDefaultOrg: gu.Ptr(true),
-				UserSchema:      gu.Ptr(true),
+				LoginDefaultOrg:               gu.Ptr(true),
+				UserSchema:                    gu.Ptr(true),
+				ManagementConsoleUseV2UserApi: gu.Ptr(true),
 				LoginV2: &feature.LoginV2{
 					Required: true,
 					BaseURI:  &url.URL{Scheme: "http", Host: "zitadel:8080"},

cmd/start/config_test.go

@@ -76,6 +76,7 @@ DefaultInstance:
   Features:
     LoginDefaultOrg: true
     UserSchema: true
+    ConsoleUseV2UserApi: true
     LoginV2:
       Required: true
       BaseURI: 'http://zitadel:8080'
@@ -87,8 +88,9 @@ Actions:
 `},
 		want: func(t *testing.T, config *Config) {
 			assert.Equal(t, config.DefaultInstance.Features, &command.InstanceFeatures{
-				LoginDefaultOrg: gu.Ptr(true),
-				UserSchema:      gu.Ptr(true),
+				LoginDefaultOrg:               gu.Ptr(true),
+				UserSchema:                    gu.Ptr(true),
+				ManagementConsoleUseV2UserApi: gu.Ptr(true),
 				LoginV2: &feature.LoginV2{
 					Required: true,
 					BaseURI:  &url.URL{Scheme: "http", Host: "zitadel:8080"},

internal/command/instance_features.go

@@ -20,7 +20,7 @@ type InstanceFeatures struct {
 	OIDCSingleV1SessionTermination *bool
 	LoginV2                        *feature.LoginV2
 	PermissionCheckV2              *bool
-	ManagementConsoleUseV2UserApi  *bool
+	ManagementConsoleUseV2UserApi  *bool `mapstructure:"ConsoleUseV2UserApi"` // for backwards compatibility we need to change this back to the old config name
 	EnableRelationalTables         *bool
 }