No default launch.json created when pressing F5

If I have a new project and hit 'F5' it gives me the option to use Browser Preview as my debug target, but it will then fail as no launch.json configuration is found.

If I do the same procedure with the regular chrome debugger extension, it'll instead create the default launch.json file with the required configuration needed to launch the tools. It'd be great for the Browser Preview to do the same.

Start by locating the F5/debug-target handling for Browser Preview and compare it with the regular Chrome debugger flow that creates launch.json. Reproduce the failure in a new project, then verify that choosing Browser Preview creates the required launch.json configuration and starts debugging successfully.

Written by the indexing model from the issue text.