Update character count status message on "Centralized content" content type - purpose field

[davidmpickett]

Description

Relates to #16659.

#16659 provides new guidance on how the status message on character count status messages should be worded. This PR would update wording on the Content Type: Centralized Content.

This came out of feedback from the VBA Regional Office CMS collab cycle.

The Facilities team is the primary user of Centralized Content, so may not need review from other teams?

Testing done

Confirmed on Tugboat

Screenshots

QA steps

What needs to be checked to prove this works?
What needs to be checked to prove it didn't break any related things?
What variations of circumstances (users, actions, values) need to be checked?

As a Drupal Admin (e.g. [email protected])

1. Do this
   • Add a new Centralized Content node
2. Then
   • Validate that the Character Counter under the Purpose field reads "XX characters remaining"

Definition of Done

• Automated tests have passed.
• Code Quality Tests have passed.
• Acceptance Criteria in related issue are met.
• Manual Code Review Approved.

[swirtSJW]

Code looks fine and it tests out

@davidmpickett I did notice that we lost a change of color approaching and going past the limit. Was this intended?
Existing color change example.

[swirtSJW]

Related slack conversation about the loss of color