Handle case when testsuites is not the root element of the JUnit xml file

[JakeFDev]

Updates the junit parsing to account for cases where tools may not utilize <testsuites> as the root element.

Without this change, trying to parse a junit xml file that omits the root testsuites element results in this error:

Parse JUnit report. Cannot read properties of undefined (reading '$')

As explained on this page, the JUnit xml format has no official specification and many tools and projects have minor variations such as this. Common JUnit XML Format & Examples

[MishaKav]

Great improvement, I will merge it soon and release a new version. Thank you.