htaccess file is not writable is displayed twice since avif

[Mai-Saad]

Before submitting an issue please check that you’ve completed the following steps:

• Made sure you’re on the latest version => 2.2.1
• Used the search feature to ensure that the bug hasn’t been reported before

Describe the bug
Given htaccess is not writable, When enable display next-gen option => then the notice for permission is duplicated

To Reproduce
Steps to reproduce the behavior:

1. install and activate 2.2.1
2. change htaccess permissions to 444
3. enable Display next-gen option
4. notice text is duplicated

Expected behavior

• notice text is not duplicated
• no warning when disabling the display next-gen option in this case

Screenshots
If applicable, add screenshots to help explain your problem.

Additional context
Add any other context about the problem here.

• When disabling the display Next-gen option in this case, we will have this warning
  [22-Apr-2024 11:17:04 UTC] PHP Warning: Undefined variable $file_path in /home/mai/Local Sites/apache/app/public/wp-content/plugins/imagify/classes/WriteFile/AbstractWriteDirConfFile.php on line 101

Acceptance Criteria (for WP Media team use only)
Clear instructions for developers, to be added before the grooming