Misc. minor fixes

[AdeelH]

Overview

This PR makes multiple minor fixes. See commits for details.

Checklist

• Added unit tests, if applicable
• Updated documentation, if applicable
• Added needs-backport label if the change should be back-ported to the previous release
• PR has a name that won't get you publicly shamed for vagueness

Notes

N/A

Testing Instructions

N/A

[codecov]

Codecov Report

Attention: 4 lines in your changes are missing coverage. Please review.

Comparison is base (d173194) 86.20% compared to head (2e2a04a) 86.16%.
Report is 3 commits behind head on master.

Files	Patch %	Lines
...rastervision/aws_sagemaker/aws_sagemaker_runner.py	75.00%	2 Missing ⚠️
...on/core/data/raster_source/xarray_source_config.py	50.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1994      +/-   ##
==========================================
- Coverage   86.20%   86.16%   -0.05%     
==========================================
  Files         195      195              
  Lines        9627     9625       -2     
==========================================
- Hits         8299     8293       -6     
- Misses       1328     1332       +4     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.