Revert "Skipping failing E2E tests for macOS due to Keychain access required by the Kevault component"

This reverts commit d239b4c.

Author: spetrescu84

MSAL/test/integration/native_auth/end_to_end/mfa/MSALNativeAuthSignInWithMFAEndToEndTests.swift

@@ -29,9 +29,6 @@ import MSAL
 final class MSALNativeAuthSignInWithMFAEndToEndTests: MSALNativeAuthEndToEndPasswordTestCase {
 
     func test_signInUsingPasswordWithMFASubmitWrongChallengeResendChallengeThen_completeSuccessfully() async throws {
-#if os(macOS)
-        throw XCTSkip("Keychain access is not active on the macOS app and is used by Keyvault")
-#endif
         guard let username = retrieveUsernameForSignInUsernamePasswordAndMFA(),
                 let password = await retrievePasswordForSignInUsername(),
                 let awaitingMFAState = await signInUsernameAndPassword(username: username, password: password)
@@ -88,9 +85,6 @@ final class MSALNativeAuthSignInWithMFAEndToEndTests: MSALNativeAuthEndToEndPass
     }
 
     func test_signInUsingPasswordWithMFAGetAuthMethods_thenCompleteSuccessfully() async throws {
-#if os(macOS)
-        throw XCTSkip("Keychain access is not active on the macOS app and is used by Keyvault")
-#endif
         guard let username = retrieveUsernameForSignInUsernamePasswordAndMFA(),
               let password = await retrievePasswordForSignInUsername(),
               let awaitingMFAState = await signInUsernameAndPassword(username: username, password: password)
@@ -146,9 +140,6 @@ final class MSALNativeAuthSignInWithMFAEndToEndTests: MSALNativeAuthEndToEndPass
     }
 
     func test_signInUsingPasswordWithMFANoDefaultAuthMethod_completeSuccessfully() async throws {
-#if os(macOS)
-        throw XCTSkip("Keychain access is not active on the macOS app and is used by Keyvault")
-#endif
         guard let username = retrieveUsernameForSignInUsernamePasswordAndMFANoDefaultAuthMethod(),
                 let password = await retrievePasswordForSignInUsername(),
                 let awaitingMFAState = await signInUsernameAndPassword(username: username, password: password)

MSAL/test/integration/native_auth/end_to_end/sign_in/MSALNativeAuthSignInUserNameAndPasswordEndToEndTests.swift

@@ -66,9 +66,6 @@ final class MSALNativeAuthSignInUsernameAndPasswordEndToEndTests: MSALNativeAuth
 
     // Hero Scenario 1.2.1. Sign in - Use email and password to get token
     func test_signInUsingPasswordWithKnownUsernameResultsInSuccess() async throws {
-#if os(macOS)
-        throw XCTSkip("Keychain access is not active on the macOS app and is used by Keyvault")
-#endif
         guard let sut = initialisePublicClientApplication(), let username = retrieveUsernameForSignInUsernameAndPassword(), let password = await retrievePasswordForSignInUsername() else {
             XCTFail("Missing information")
             return