Global Styles: Elements: Link style rules are being applied to buttons

[scruffian]

Description

Link rules that are set via theme.json also bleed into button elements on the front end of the site. To overcome this I think we might need to add :not(.wp-element-button) to the link element selector.

Step-by-step reproduction instructions

1. Switch to emtpytheme
2. Add this to your theme.json file under elements

			"link": {
				"border": {
					"color": "grey",
					"radius": "1px",
					"width": "5px",
					"style": "solid"
				},
				"color": {
					"background": "lightblue",
					"text": "red"
				},
				"spacing": {
					"padding": "10px"
				},
				"typography": {
					"fontFamily": "sans-serif",
					"fontSize": "20px",
					"textDecoration": "none"
				},
				":hover": {
					"border": {
						"color": "black",
						"radius": "10px",
						"width": "5px",
						"style": "solid"
					},
					"color": {
						"background": "red",
						"text": "black"
					}
				}
			}

3. Add some buttons blocks
4. Switch to the front of your site.
5. Notice that some of the link and hover rules are applying to buttons as well as to links

Screenshots, screen recording, code snippet

Environment info

No response

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes

[draganescu]

Tested this, it is visible on the front end.

[draganescu]

Tested this, simply adding :not(.wp-element-button) to ELEMENTS['link'] breaks the hover behavior and the generated style for a:not(.wp-element-button):hover is the same as for a:not(.wp-element-button).

[getdave]

Ok this is an interesting bug. I will look into it now.

[getdave]

I have a suggested fix in #42072. Not sure if the :not() selector route is sustainable in the long term however.