Administration: Fix sizing of page header links on mobile.

Page title actions were modified to match the global button styles in #41986, but these styles were not applied to mobile viewports at the time. 

Fix padding, height, line-height, and alignment to match these links to global styles. 

Props joedolson, rollybueno, sumitbagthariya16, circlecube, shailu25.
Fixes #63831.

git-svn-id: https://develop.svn.wordpress.org/trunk@60705 602fd350-edb4-49c9-b593-d223f7449a82

Author: joedolson

src/wp-admin/css/common.css

@@ -3967,9 +3967,12 @@ img {
 	.wrap .add-new-h2:active, /* deprecated */
 	.wrap .page-title-action,
 	.wrap .page-title-action:active {
-		padding: 10px 15px;
+		padding: 0 14px;
 		font-size: 14px;
 		white-space: nowrap;
+		min-height: 40px;
+		line-height: 2.71428571;
+		vertical-align: middle;
 	}
 
 	/* Feedback Messages */