Ensure to reopen associated issue if a terms becomes inaccessible again

[Ndpnt]

Additionally, include missing tests for the GitHub class in the Reporter module

[MattiSG]

Congratulations for creating a sorely missing test suite for what has grown into an important part of the workflow! 👏

Here are some suggestions that are valid for the whole suite, aiming at decreasing the code size:

1. Remove all white box testing (typically spy functions checking that a search was made on the list of issues, which is an implementation detail we shouldn't care about).
2. Move all tested functions from before to the it body.
3. It seems all tested cases have only 1 to 2 test functions (once suggestion 1 above is applied), mostly checking that an API call was made and sometimes checking for return value. I suggest merging these functions into 1 single test function, enabling replacing the repeated after(nock.cleanall) by a single afterEach call at the beginning of the test suite.
4. Use a shared fixture for issue data to avoid repeating the data setup.