feat: clean up wms tiler and pipeline workflow
Clean up the WMS tiler to handle unexpected server exceptions and to skip already saved files in subsequent runs if errors are incurred.
Also fix some small workflow errors/warnings in the prediction workflow.
Checklist
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I've updated the CHANGELOG.md and other documentation (if applicable) -
I have added sufficient unit tests -
I will make sure the commit follows the HeiGIt commit message guideline
Edited by Danielle Gatland