[AutoPR Azure.Developer.LoadTesting] [BugFix] Remove the default value for engineBuiltInIdentityType to ma…#10511

azure-sdk wants to merge 1 commit intomainazure-sdk/azure-sdk-for-net:mainfrom

sdkAuto/32749/Azure.Developer.LoadTestingazure-sdk/azure-sdk-for-net:sdkAuto/32749/Azure.Developer.LoadTestingCopy head branch name to clipboard