[24.2] Handle isatools dependency

[jdavcs]

As discussed in committers channel, there's a dependency conflict preventing publishing the galaxy-data package to pypi. The isa-rwval dependency is currently installed from a github fork due to the incompatibility of the original package with numpy 2.0 (see ISA-tools/isa-rwval#17 for context). However, such dependencies cannot be uploaded to PyPI.

The proposed solution is to remove the isatools dependency from the data package and wrap the import in datatypes in a try block.

Another option would be to publish the fork on PyPI.

(Thanks to @nsoranzo for proposed approach)

TODO:

• package unit test error

License

• I agree to license these and all my past contributions to the core galaxy codebase under the MIT license.

[nsoranzo]

I'd do it as in https://github.com/galaxyproject/galaxy/blob/dev/lib/galaxy/datatypes/molecules.py i.e. set the modules to None if the import failed, and check for not None before using them.

[jdavcs]

Test failures unrelated.

[nsoranzo]

I suppose you wanted to target release_24.2?

[nsoranzo]

Pushed a commit, hope it's OK.