Allow for granule search for collection without SpatialExtent in UMM-G

[lsterzinger]

Description

This PR resolves #1305 where searching for granules in some of our collections that do not contain spatial information in the UMM-G record. The assumption that SpatialExtent is populated only seems to exist in the granule string representation, and my tests searching for data in my collection ( gnssro_cosmic1_jpl_l1b_2.0) were successful after this change.

The same assumption is made about TemporalExtent, but I'm guessing missing this is a less-common situation. I'm happy to adjust to check for both if desired.

If this requires a new test to be added, I'm happy to add that as well if I can be pointed in the right direction.

---

"Ready for review" checklist

• Place this Pull Request (PR) in draft until it is ready for review (see below)
• Please review our Pull Request Guide
• Mark "ready for review" after following instructions in the guide

Merge checklist

• PR title is descriptive
• PR body contains links to related and resolved issues (e.g. closes #1)
• If needed, CHANGELOG.md updated
• If needed, docs and/or README.md updated
• If needed, unit tests added (unsure how? see below!)
• All checks passing (tip: comment pre-commit.ci autofix if pre-commit is failing)
• At least one approval

Need help? We welcome contributions at every experience level. You don't have to
write tests alone — open your PR and ask for help. It's also fine to let GitHub run tests
for you, via Continuous Integration (CI),
instead of running them locally. If anything fails and you're not sure why, just
mention @earthaccess-dev/maintainers in a comment and we'll work with you!

---

📚 Documentation preview 📚: https://earthaccess--1309.org.readthedocs.build/en/1309/

[github-actions]

👈 Launch a binder notebook on this branch for commit 798be4e

I will automatically update this comment whenever this PR is modified

👈 Launch a binder notebook on this branch for commit 95810fa

👈 Launch a binder notebook on this branch for commit f008d36

👈 Launch a binder notebook on this branch for commit 7e1923f

[betolink]

Thanks for the PR @lsterzinger since this is a simple change, you can optionally add a test, if you have time it would just creating a mocked umm record with and without spatial extent.

[betolink]

@lsterzinger should we merge ?

[lsterzinger]

If you don't think the test is needed I'm happy with a merge. I would be open to write a test but I wouldn't be able to get to work on it for at least a week. I can always submit another PR for it if that's alright with you