chore: management console naming inconsistency (#11390)

# Which Problems Are Solved

The following terms have all been renamed to management console:

- Customer Portal (when used to mean the console)
- Console
- Admin Console

# How the Problems Are Solved

- Search & Replace smartly
- Use Copilot for translation files

Changes done to: backend + frontend codebase, docs, translations and
protobufs (descriptions only)

# Additional Context

- Partially Closes #11279

internal/command/instance_features_model_test.go

@@ -111,13 +111,13 @@ func Test_reduceInstanceFeature(t *testing.T) {
 			expected: &InstanceFeatures{PermissionCheckV2: gu.Ptr(true)},
 		},
 		{
-			name: "console use v2 user api",
+			name: "management console uses v2 user api",
 			args: args{
 				features: &InstanceFeatures{},
-				key:      feature.KeyConsoleUseV2UserApi,
+				key:      feature.KeyManagementConsoleUseV2UserApi,
 				value:    true,
 			},
-			expected: &InstanceFeatures{ConsoleUseV2UserApi: gu.Ptr(true)},
+			expected: &InstanceFeatures{ManagementConsoleUseV2UserApi: gu.Ptr(true)},
 		},
 		{
 			name: "enable relational tables",