rcal-906 Allow asn product name to be the output product name

[ddavis-stsci]

Resolves RCAL-906

Closes #1390

This PR allows the asn product name to be the output product name

Checklist

• added entry in CHANGES.rst under the corresponding subsection
• [N/A] updated relevant tests
• [N/A] updated relevant documentation
• updated relevant milestone(s)
• added relevant label(s)
• ran regression tests, post a link to the Jenkins job below. How to run regression tests on a PR
  The passing regression tests are at:
  https://github.com/spacetelescope/RegressionTests/actions/runs/10635674348

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 78.49%. Comparing base (71407e9) to head (7a5c093).
Report is 232 commits behind head on main.

Files with missing lines	Patch %	Lines
romancal/pipeline/mosaic_pipeline.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1394   +/-   ##
=======================================
  Coverage   78.48%   78.49%           
=======================================
  Files         117      117           
  Lines        7868     7867    -1     
=======================================
  Hits         6175     6175           
+ Misses       1693     1692    -1     

Flag	Coverage Δ		*Carryforward flag
nightly	62.24% <ø> (ø)		Carriedforward from 71407e9

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