Add line-height to new customizer shortcut pencil icons

[jbobich]

Not a huge deal, but if a theme is styling general buttons (as many themes are) any declared line-height will affect the new shortcut pencil icons in the customizer, possibly making them look a bit off. This is because no line-height is specified on these shortcut pencil icons.

I'm referring to specifically:

.customize-partial-edit-shortcut button, 
.widget .customize-partial-edit-shortcut button {
	...
}

... in wp-includes/css/customize-preview.css.

Simply declaring a line-height there would fix this, for a more consistent customizer experience with this great, little new feature.

Apologies, if I'm not explaining clearly. See attached screenshot.

[jbobich]

Screenshot showing issue

[westonruter]

@sirbrillig here's another instance of !important being added. Any feedback from you here?

[westonruter]

In 39242:

Customize: Add !important line-height to edit shortcut buttons.

Ensure that icon inside edit shortcut is centered when theme defines default line-height for button elements.

Fixes #38787.

[sirbrillig]

👍 Sorry for the delay! I was traveling yesterday.