Do not show CPT that does not support "editor"

[crazytonyli]

Description

See the inline comments for details.

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[wpmobilebot]

📲 You can test the changes from this Pull Request in Jetpack by scanning the QR code below to install the corresponding build.

	App Name	Jetpack
	Configuration	Release-Alpha
	Build Number	31643
	Version	PR #25415
	Bundle ID	com.jetpack.alpha
	Commit	d79938f
	Installation URL	4fpmfncfo43g0

Automatticians: You can use our internal self-serve MC tool to give yourself access to those builds if needed.

[wpmobilebot]

📲 You can test the changes from this Pull Request in WordPress by scanning the QR code below to install the corresponding build.

	App Name	WordPress
	Configuration	Release-Alpha
	Build Number	31643
	Version	PR #25415
	Bundle ID	org.wordpress.alpha
	Commit	d79938f
	Installation URL	31oureouhs3p0

Automatticians: You can use our internal self-serve MC tool to give yourself access to those builds if needed.

[wpmobilebot]

Version 26.8 has now entered code-freeze, so the milestone of this PR has been updated to 26.9.

[kean]

LGTM. I wonder how it'll support custom editors.

[crazytonyli]

I always feel that if a plugin has its own strict rules about what kind of content a user is supposed to create, whether via custom fields or a custom editor, they probably should have their own apps rather than relying on the WordPress app.