fix: ListRelations should not swallow errors

[evansims]

Description

Thanks to @GMorris-professional for contributing these changes in openfga/sdk-generator#516

ListRelations now throws the first error that occurs during one of the checks instead of swallowing it.

References

• fix(python-sdk): list relations should throw error when an underlying… sdk-generator#516
• Python SDK: ListRelations should not swallow errors if an underlying check errors out #183 #173
• ListRelations should not swallow errors if an underlying check errors out sdk-generator#183

Review Checklist

• I have clicked on "allow edits by maintainers".
• I have added documentation for new/changed functionality in this PR or in a PR to openfga.dev [Provide a link to any relevant PRs in the references section above]
• The correct base branch is being used, if not main
• I have added tests to validate that the change in functionality is working as expected

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.48%. Comparing base (d4e31a2) to head (e4715de).

Additional details and impacted files

@@ Coverage Diff @@## main #183 +/- ##
==========================================
+ Coverage 70.45% 70.48% +0.03% 
==========================================
Files 134 134 Lines 10806 10818 +12 ==========================================
+ Hits 7613 7625 +12 
Misses 3193 3193 

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