CI Test improvement ideas

[ryanking13]

Listing a few minor test improvement ideas before I forget.

• test_parse_package: It was first added when we introduced shared_library type package. It does nothing now and I think we can remove it.
• test_import_package: This is the most time-consuming test, importing every package with a new selenium standalone instance.
  • maybe we can separate it from other package test? Making two CI jobs for test?
  • I once tried to reuse the selenium instance to speed up the test. I think we can try that again (Reuse selenium instance for package import test pyodide#2406)
• logging: It would be nice to create a report after the test. We are already doing it in pyodide/pyodide.

and more items as discussed in the sub-issues below.