Media: Remove required attribute from media uploader file input field.

This commit removes the required attribute from the file input element in the media uploader to avoid browser form validation issues and ensure that the form element is submitted correctly.

Reviewed by cbravobernal.
Merges [61320] to the 6.9 branch.

Props adamsilverstein, ellatrix, desrosj, huzaifaalmesbah, immeet94, krupajnanda, madhavishah01, parthvataliya, ravichudasama01, sabernhardt, wildworks, yagniksangani.
Fixes #64305.


git-svn-id: https://develop.svn.wordpress.org/branches/6.9@61333 602fd350-edb4-49c9-b593-d223f7449a82

Author: cbravobernal

src/wp-admin/includes/media.php

@@ -2285,7 +2285,7 @@ function media_upload_form( $errors = null ) {
 			_ex( 'Upload', 'verb' );
 			?>
 		</label>
-		<input type="file" name="async-upload" id="async-upload" required />
+		<input type="file" name="async-upload" id="async-upload" />
 		<?php submit_button( _x( 'Upload', 'verb' ), 'primary', 'html-upload', false ); ?>
 		<a href="#" onclick="try{top.tb_remove();}catch(e){}; return false;"><?php _e( 'Cancel' ); ?></a>
 	</p>