Handle default columns in to_hats

[camposandro]

Reset the default columns for a catalog saved with to_hats, unless they are specified by the user. Closes #786.

[github-actions]

Before [7e1ac78] <v0.5.3>	After [d8be8c2]	Ratio	Benchmark (Parameter)
6.28±0.03s	6.34±0.01s	1.01	benchmarks.time_create_large_catalog
934±8ms	940±7ms	1.01	benchmarks.time_create_midsize_catalog
26.8±0.5ms	27.1±0.4ms	1.01	benchmarks.time_polygon_search
13.1±0.09ms	12.9±0.2ms	0.99	benchmarks.time_box_filter_on_partition
81.4±2ms	80.2±0.7ms	0.98	benchmarks.time_kdtree_crossmatch

Click here to view all benchmarks.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.44%. Comparing base (af44d09) to head (57b9a97).
⚠️ Report is 180 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #806   +/-   ##
=======================================
  Coverage   97.44%   97.44%           
=======================================
  Files          54       54           
  Lines        2463     2464    +1     
=======================================
+ Hits         2400     2401    +1     
  Misses         63       63           

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