fix(report): edit without custom width

[betodealmeida]

SUMMARY

Allow passing an empty custom_width when configuring a report.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

TESTING INSTRUCTIONS

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

Merging #24612 (8d14e2f) into master (6657353) will increase coverage by 0.00%.
The diff coverage is 57.14%.

❗ Current head 8d14e2f differs from pull request most recent head 33823c2. Consider uploading reports for the commit 33823c2 to get more accurate results

@@           Coverage Diff           @@
##           master   #24612   +/-   ##
=======================================
  Coverage   69.10%   69.10%           
=======================================
  Files        1906     1906           
  Lines       74114    74118    +4     
  Branches     8165     8165           
=======================================
+ Hits        51213    51217    +4     
  Misses      20778    20778           
  Partials     2123     2123           

Flag	Coverage Δ
hive	54.14% <42.85%> (-0.01%)	⬇️
mysql	79.47% <42.85%> (-0.01%)	⬇️
postgres	79.55% <42.85%> (-0.02%)	⬇️
presto	54.04% <42.85%> (-0.01%)	⬇️
python	83.53% <57.14%> (+<0.01%)	⬆️
sqlite	78.12% <42.85%> (-0.01%)	⬇️
unit	54.83% <57.14%> (+0.01%)	⬆️

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Impacted Files	Coverage Δ
superset/reports/schemas.py	92.38% <57.14%> (+1.29%)	⬆️

... and 1 file with indirect coverage changes

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[sadpandajoe]

🏷️ preset:2023.27