Layout for API Explorer page is incorrect

Description of problem:

The API Explorer page layout is incorrect,  please check the attachment for more details

Version-Release number of selected component (if applicable):

4.12.0-0.nightly-2022-08-15-150248

How reproducible:

Always

Steps to Reproduce:
1. Login OCP, Go to Home -> API Explorer page

2. Check if there is an extra blank line between the dropdown filter and the list 

Actual results:

There is an extra blank line between the dropdown filter and the list 

Expected results:

Use right patternfly package, remove the extra blank line

Additional info:

104.0.5112.79 (Official Build) (64-bit)