Make textarea on edit pages full width

[lee14334]

Closes #10058

This PR addresses a bug where the text area in the edit page was expected to be full width, but actually filled only half of it instead due to the conflicting textarea style defined in the component forms.olform.less.

Technical

This change increases the specificity of the textarea element in edit-pages.less by adding a class selector, ensuring that the text area for the edit page follows the style from page-edit.less.

Testing

1. Login & go to your profile page by clicking the hamburger icon and selecting "My Profile"
2. Click Edit
3. Scroll to Description section. Expect for the text area to take 100% width as shown in the screenshot.

Screenshot

Before:

After:

Stakeholders

@RayBB

[RayBB]

It's working for me. Great work!
Don't think this is too risky but did check on author/book edit pages and they still seemed fine.

Now we need @cdrini to check it out.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 17.44%. Comparing base (347bff9) to head (3025f5d).
Report is 168 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #10137      +/-   ##
==========================================
+ Coverage   17.12%   17.44%   +0.31%     
==========================================
  Files          89       89              
  Lines        4752     4792      +40     
  Branches      831      848      +17     
==========================================
+ Hits          814      836      +22     
- Misses       3428     3436       +8     
- Partials      510      520      +10     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.