Closes #5330: Removal of bottom margin from entity reference fields changed some content type displays

[bberndt-uaz]

Description

1. Updates content type view displays to maintain the spacing prior to Closes #5274: Adds margin 0 override to entity reference fields #5294 as closely as possible (using only Arizona Bootstrap classes)
2. Restricts the .field--type-entity-reference CSS override to margin-bottom and increases the specificity to ensure it always overrides Bootstrap Barrio
3. Removes other .field--type-entity-reference CSS overrides that are no longer needed

Release notes

### Removed bottom margin for entity reference fields
This release removes the bottom margin added to entity reference fields by Bootstrap Barrio. This change primarily affects images used as part of content type displays. Custom content type displays may need to be updated to account for this styling change.

Related issues

• Removal of bottom margin from entity reference fields changed some content type displays #5330

How to test

Review the displays / views below to confirm that the updated spacing below images is appropriate:

1. AZ Event Card Alternate display
   • Before 5294
   • Current Quickstart
   • This PR
2. AZ News Card display
   • Before 5294
   • Current Quickstart
   • This PR
3. AZ News Media List display
   • Before 5294
   • Current Quickstart
   • This PR
4. AZ News - Recent News Marquee view, AZ News - Small Row view, and AZ News Row with Background display in side-by-side view
   • Before 5294
   • Current Quickstart
   • This PR
5. AZ Publication - Card display
   • Before 5294
   • Current Quickstart
   • This PR

Also, confirm that this PR doesn't introduce any regressions related to image margins for Split Screen paragraphs and AZ Carousel items.

Types of changes

Arizona Quickstart (install profile, custom modules, custom theme)

• Patch release changes
  • Bug fix
  • Accessibility, performance, or security improvement
  • Critical institutional link or brand change
  • Adding experimental module
  • Update experimental module
• Minor release changes
  • New feature
  • Breaking or visual change to existing behavior
  • Upgrade experimental module to stable
  • Enable existing module by default or database update
  • Non-critical brand change
  • New internal API or API improvement with backwards compatibility
  • Risky or disruptive cleanup to comply with coding standards
  • High-risk or disruptive change (requires upgrade path, risks regression, etc.)
• Other or unknown
  • Other or unknown

Drupal core

• Patch release changes
  • Security update
  • Patch level release (non-security bug-fix release)
  • Patch removal that's no longer necessary
• Minor release changes
  • Major or minor level update
• Other or unknown
  • Other or unknown

Drupal contrib projects

• Patch release changes
  • Security update
  • Patch or minor level update
  • Add new module
  • Patch removal that's no longer necessary
• Minor release changes
  • Major level update
• Other or unknown
  • Other or unknown

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.
• My change requires release notes.