Add block button (primary button) not displaying properly

Problem/Motivation

After upgrading to Drupal 9.5.x I noticed the Add/Update Block primary button at the bottom of all block forms within the off-canvas tray is not displaying properly. The button displays extremely thin and extra wide (See attachment)

Steps to reproduce

• Navigate to any Layout Builder page to add or update blocks on that page
• Click "Configure block" from the quick edit button found in every block (off-canvas tray will open)
• If you are editing a block, scroll to the bottom of the block's form in the off-canvas tray and you will see the "Update block" button
• If you are adding a new block, Select the block you wish to add to the page and scroll to the bottom where you will see the "Add block" button
• You will notice the primary button not displaying properly

Proposed resolution

Update the button styles to ensure the button always displays properly and is easy to interact with.

Remaining tasks

N/A

User interface changes

Improve rendering of primary button in off-canvas tray.

API changes

N/A

Data model changes

N/A