fix(auth): Use inputUsername for device metadata lookup during token refresh (#4208)

* fix(auth): Use inputUsername for device metadata lookup during token refresh

* fix(auth): Use inputUsername for device metadata lookup during token refresh

Author: jvh-aws

AmplifyPlugins/Auth/Sources/AWSCognitoAuthPlugin/Actions/RefreshAuthorizationSession/UserPool/RefreshUserPoolTokens.swift

@@ -33,7 +33,7 @@ struct RefreshUserPoolTokens: Action {
             let existingTokens = existingSignedIndata.cognitoUserPoolTokens
 
             let deviceMetadata = await DeviceMetadataHelper.getDeviceMetadata(
-                for: existingSignedIndata.username,
+                for: existingSignedIndata.inputUsername ?? existingSignedIndata.username,
                 with: environment
             )
 
@@ -82,7 +82,8 @@ struct RefreshUserPoolTokens: Action {
             let signedInData = SignedInData(
                 signedInDate: existingSignedIndata.signedInDate,
                 signInMethod: existingSignedIndata.signInMethod,
-                cognitoUserPoolTokens: userPoolTokens
+                cognitoUserPoolTokens: userPoolTokens,
+                inputUsername: existingSignedIndata.inputUsername
             )
             let event: RefreshSessionEvent