change the mock data defaults from 'en' to 'en-us' so everything is aligned in the mock data

src/Umbraco.Web.UI.Client/src/mocks/data/dictionary/dictionary.data.ts

@@ -18,10 +18,10 @@ export const data: Array<UmbMockDictionaryModel> = [
 		id: 'aae7d0ab-53ba-485d-b8bd-12537f9925cb',
 		parent: null,
 		hasChildren: false,
-		translatedIsoCodes: ['en'],
+		translatedIsoCodes: ['en-us'],
 		translations: [
 			{
-				isoCode: 'en',
+				isoCode: 'en-us',
 				translation: 'hello in en',
 			},
 			{
@@ -35,10 +35,10 @@ export const data: Array<UmbMockDictionaryModel> = [
 		id: 'bbe7d0ab-53bb-485d-b8bd-12537f9925cb',
 		parent: null,
 		hasChildren: true,
-		translatedIsoCodes: ['en', 'da'],
+		translatedIsoCodes: ['en-us', 'da'],
 		translations: [
 			{
-				isoCode: 'en',
+				isoCode: 'en-us',
 				translation: 'Hello again in en',
 			},
 			{
@@ -52,10 +52,10 @@ export const data: Array<UmbMockDictionaryModel> = [
 		id: '438b8693-2156-482b-84af-ccdae0c2df6e',
 		parent: { id: 'bbe7d0ab-53bb-485d-b8bd-12537f9925cb' },
 		hasChildren: false,
-		translatedIsoCodes: ['en', 'da'],
+		translatedIsoCodes: ['en-us', 'da'],
 		translations: [
 			{
-				isoCode: 'en',
+				isoCode: 'en-us',
 				translation: 'Nested Hello again in en',
 			},
 			{

src/Umbraco.Web.UI.Client/src/mocks/data/document/document.db.ts

@@ -37,7 +37,7 @@ export class UmbDocumentMockDB extends UmbEntityMockDbBase<UmbMockDocumentModel>
 	}
 
 	getDomainsForDocument(id: string): DomainsResponseModel {
-		return { defaultIsoCode: 'en', domains: [] };
+		return { defaultIsoCode: 'en-us', domains: [] };
 	}
 }
 

src/Umbraco.Web.UI.Client/src/mocks/data/language/language.data.ts

@@ -5,7 +5,7 @@ export type UmbMockLanguageModel = LanguageResponseModel & LanguageItemResponseM
 export const data: Array<UmbMockLanguageModel> = [
 	{
 		name: 'English',
-		isoCode: 'en',
+		isoCode: 'en-us',
 		isDefault: true,
 		isMandatory: true,
 	},
@@ -14,6 +14,6 @@ export const data: Array<UmbMockLanguageModel> = [
 		isoCode: 'da',
 		isDefault: false,
 		isMandatory: false,
-		fallbackIsoCode: 'en',
+		fallbackIsoCode: 'en-us',
 	},
 ];

src/Umbraco.Web.UI.Client/src/mocks/handlers/dictionary/import-export.handlers.ts

@@ -9,10 +9,10 @@ const importResponse: UmbMockDictionaryModel = {
 	name: 'Uploaded dictionary',
 	id: 'b7e7d0ab-53ba-485d-dddd-12537f9925cb',
 	hasChildren: false,
-	translatedIsoCodes: ['en', 'da'],
+	translatedIsoCodes: ['en-us', 'da'],
 	translations: [
 		{
-			isoCode: 'en',
+			isoCode: 'en-us',
 			translation: 'I am an imported US value',
 		},
 		{