fix: Fix smart retry in XCUITest simulator test

[tianfeng92]

Proposed changes

In the current JUnit report, the classname follows the class.testMethod pattern. However, this format is not suitable for filtering out failed tests in smart retry tests. This PR is proposed to update the classname to the class/testMethod format.

Initial test: https://app.saucelabs.com/tests/fb0d832bc6d644c58beebe1415d229c5#1
Retried test: https://app.saucelabs.com/tests/b6d20f0fd20345bea7eb463d1e7f105c#1

Verified, real device test remains unaffected.

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Checklist

• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)
• I have updated the json schema (if appropriate)

Further comments

[alexplischke]

Changes like these need better in-code documentation, as it's not clear by reading the code alone why things are the way they are.