Test case for considering all features in an uploaded extent

[john-dupuy]

    @vermeulendivan thanks for the fix. In a future PR could you add a test case for this?

Originally posted by @john-dupuy in https://github.com/planetlabs/qgis-planet-plugin/issues/94#issuecomment-1369916295

[vermeulendivan]

This has been added to the https://github.com/planetlabs/qgis-planet-plugin/pull/94 PR