feat(widget-builder): Add legend aliases to visualize

[narsaynorath]

Supports aliases for fields. I do this by modifying the serialize/deserialize methods to allow for a JSON string that represents the field with the alias. It only applies the JSON string if it has an alias, otherwise we just put it in as normal. This is for convenience so we don't have to update all of the tests to account for this.

The deserialize method will try to parse the field as JSON, and if that doesn't work, fallback to the old method of exploding the string.

Also adds the correct handling to take a widget and turn it into params, or take the state and convert it into a widget (specifically, passing the aliases around in the WidgetQuery data structure)

Closes #82368

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

✅ All tests successful. No failed tests found.

Additional details and impacted files

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- Coverage   80.43%   80.43%   -0.01%     
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  Files        7303     7303              
  Lines      321961   321954       -7     
  Branches    20990    20989       -1     
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- Hits       258972   258966       -6     
+ Misses      62584    62583       -1     
  Partials      405      405              

[nikkikapadia]

lgtm