fix: #2007 by reimplementing #2533

[heath-freenome]

Reasons for making this change

Fixed #2007 by reimplementing #2533

The current code for FieldTemplate and TextWidget in bootstrap 4 is incompatible with the core package. This breaks the external facing API for customizing field template. According to the core package implementation and documents, FieldTemplate is responsible for layout of labels, description, errors and help while the input widget along with the state is to be managed by the Field Component themselves (and Widgets) If a user, uses custom field template with the bootstrap 4 form, the label is displayed multiple times, once by the custom field template (as intended in the API) and second time by the TextWidget (breaks from the core package convention) This fixes the problem and updates the tests to catch any future regressions.

• Updated FieldTemplate to output Label generation, adding an additional check to simply render children when the component is hidden
• Updated BaseInputTemplate, CheckboxesWidget, RadioWidget, SelectWidget and TextareaWidget, removing the Label generation
• Updated the test snapshots
• Updated the CHANGELOG.md accordingly

Checklist

• I'm updating documentation
  • I've checked the rendering of the Markdown text I've added
• I'm adding or updating code
  • I've added and/or updated tests. I've run npm run test:update to update snapshots, if needed.
  • I've updated docs if needed
  • I've updated the changelog with a description of the PR
• I'm adding a new feature
  • I've updated the playground with an example use of the feature