basename from GNU coreutils 8.32 (the default on Debian Bullseye, as
bash 5.2.0 does not include basename as a built-in command) does not
accept multiple arguments. This will cause the command to fail with no
output, and the error code not being propagated for some reason. This
means that the loop never gets executed, and thus the check never
actually does anything. This commit fixes that behavior by calling
'basename' multiple times.
Problem:
- It is possible for a new test file to be added to the `AK/Tests`
directory without being added to the corresponding
`CMakeLists.txt`. This results in the tests not being run.
Solution:
- As part of CI linting, verify that all the `AK/Tests/Test*.cpp`
files are mentioned in the `CMakeLists.txt`.
