One-click deploy to web visible in new projects (without export setup)

[clayjohn]

Tested versions

Slightly out of date master (c4279fe)

System information

All systems

Issue description

The one click deploy button for web export is always available even when the export is not set up. This is visible even in a new project even though its not functional.

The button should only appear when a web export is set up and set to "runnable"

Steps to reproduce

Create a new project

Minimal reproduction project (MRP)

web-export-bug.zip

[akien-mga]

Indeed, I was about to report this too.

See #35592 for context of last time we had this behavior and fixed it. I couldn't quickly find which PR fixed it for context, but there should also be one for Android / starting adb that can be used for reference.

Basically if there's no configured preset for the platform, we should return early.

[matheusmdx]

Bisecting points to #91369 as the culprit: