Use CDSE orbits

[geoscience-aman]

What?
Update our orbit downloading function to download from the Copernicus Data Space Ecoystem (CDSE).

Why?
We found a discrepancy that returns a different orbit file depending on whether you get the orbit from ASF or CDSE. This was causing issues in s1reader with our processing. More info here: scottstanie/sentineleof#68

Testing
I have tested the function but not done a full run of our pipeline.

(compass) ubuntu@:~/rtc-pipeline-dev/orbits_test$ python3 test_eofs.py
[04/01 07:13:10] [INFO test_eofs.py:49] Starting EOF download...
[04/01 07:13:10] [INFO dataspace_client.py:62] Querying for AUX_POEORB orbit files from endpoint https://catalogue.dataspace.copernicus.eu/odata/v1/Products
[04/01 07:13:11] [INFO download.py:105] Attempting download from SciHub
[04/01 07:13:16] [INFO dataspace_client.py:372] Orbit file downloaded to /home/ubuntu/rtc-pipeline-dev/orbits_test/S1A_OPER_AUX_POEORB_OPOD_20250330T070553_V20250309T225942_20250311T005942.EOF

[caitlinadams]

I've added a few comments following up from Alex's suggestions.