Administration: Update bulk edit validity checks & CSS.

Omitted to update the scripting validating bulk edit selections when changing the list table `th`. Add overlooked CSS to set post title `th` to `vertical-align: top`. Follow up to [62838].

Developed in WordPress#12666

Props joedolson, tobiasbg.
Fixes #32892.

git-svn-id: https://develop.svn.wordpress.org/trunk@62839 602fd350-edb4-49c9-b593-d223f7449a82

Author: joedolson

src/js/_enqueues/admin/inline-edit-post.js

@@ -191,7 +191,7 @@ window.wp = window.wp || {};
 	 */
 	setBulk : function(){
 		var te = '', type = this.type, c = true;
-		var checkedPosts = $( 'tbody th.check-column input[type="checkbox"]:checked' );
+		var checkedPosts = $( 'tbody .check-column input[type="checkbox"]:checked' );
 		var categories = {};
 		this.revert();
 
@@ -207,7 +207,7 @@ window.wp = window.wp || {};
 		 *
 		 * Get the selected posts based on the checked checkboxes in the post table.
 		 */
-		$( 'tbody th.check-column input[type="checkbox"]' ).each( function() {
+		$( 'tbody .check-column input[type="checkbox"]' ).each( function() {
 
 			// If the checkbox for a post is selected, add the post to the edit list.
 			if ( $(this).prop('checked') ) {

src/wp-admin/css/common.css

@@ -501,6 +501,7 @@ code {
 	border-bottom-width: 0;
 }
 
+.widefat th,
 .widefat td {
 	vertical-align: top;
 }