V9: Implementing Error Describers for translated error messages (#10216)

* Adding missing keys needed for the translation of the error describers' msgs

* Override all methods from IdentityErrorDescriber in order to provide our own translated error messages using our own translation engine (ILocalizedTextService)

* Fix tests

* Refactoring based on introducing an UmbracoErrorDescriberBase

* Remove unnecessary usings

src/Umbraco.Tests.UnitTests/Umbraco.Infrastructure/Security/MemberManagerTests.cs

@@ -73,7 +73,7 @@ namespace Umbraco.Cms.Tests.UnitTests.Umbraco.Infrastructure.Security
                 _mockPasswordHasher.Object,
                 userValidators,
                 pwdValidators,
-                new MembersErrorDescriber(),
+                new MembersErrorDescriber(Mock.Of<ILocalizedTextService>()),
                 _mockServiceProviders.Object,
                 new Mock<ILogger<UserManager<MemberIdentityUser>>>().Object,
                 _mockPasswordConfiguration.Object,

src/Umbraco.Tests.UnitTests/Umbraco.Web.Common/Security/MemberSignInManagerTests.cs

@@ -65,7 +65,7 @@ namespace Umbraco.Cms.Tests.UnitTests.Umbraco.Web.Common.Security
                     Mock.Of<IPasswordHasher<MemberIdentityUser>>(),
                     Enumerable.Empty<IUserValidator<MemberIdentityUser>>(),
                     Enumerable.Empty<IPasswordValidator<MemberIdentityUser>>(),
-                    new MembersErrorDescriber(),
+                    new MembersErrorDescriber(Mock.Of<ILocalizedTextService>()),
                     Mock.Of<IServiceProvider>(),
                     Mock.Of<ILogger<UserManager<MemberIdentityUser>>>(),
                     Options.Create(new MemberPasswordConfigurationSettings()),