WebView2 VS Code debugging corrections

[mikehoffms]

This PR re-applies changes from #3383, which was merged, but apparently overwritten and didn't go through the PR process. Or we might replace the present PR by a fresh PR created by @mikosg which I think is preferable.

Corrections of VS Code launch.json syntax:

• "useWebView": true property is not allowed for "request": "attach" configs, only for "request": "launch" configs. For attaching configs, useWebView accepts an object instead of a boolean value, where the pipeName property for UWP apps shall be specified, as correctly stated in the UWP section.
• --remote-debugging-port=9222 command line argument is also needed for "request": "launch" type configs when custom runtimeExecutable is used. It can be supplied either via environment variable or via registry key.

Rendered article sections for review:

• Debug WebView2 apps with Visual Studio Code > Create a launch.json file
  • /webview2/how-to/debug-visual-studio-code.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/how-to/debug-visual-studio-code?branch=pr-en-us-3397#create-a-launchjson-file
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/user/mikehoffms/webview2-vscode-debug/microsoft-edge/webview2/how-to/debug-visual-studio-code.md#create-a-launchjson-file
  • Before/live: https://learn.microsoft.com/en-us/microsoft-edge/webview2/how-to/debug-visual-studio-code#create-a-launchjson-file
  • Added code/comments & indented paragraph "Instead of setting".
• Debug WebView2 apps with Visual Studio Code > Debug running processes
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/webview2/how-to/debug-visual-studio-code?branch=pr-en-us-3397#debug-running-processes
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/user/mikehoffms/webview2-vscode-debug/microsoft-edge/webview2/how-to/debug-visual-studio-code.md#debug-running-processes
  • Before/live: https://learn.microsoft.com/microsoft-edge/webview2/how-to/debug-visual-studio-code#debug-running-processes
  • Removed line "useWebView": true
  • Added indented paragraph "Instead of setting".

AB#56291878

[mikehoffms]

I will copy changes from PR #3383
I didn't have a chance to examine that PR. Status will become clear during the present PR.
@mikosg
No ETA. You will be able to enter PR Comments in Files Changed tab, which will add you as reviewer & maybe contributor.

---

IMO, the following is preferable instead of the present PR:

If you want more credit in GitHub account page or Learn.microsoft.com article, an alternative is we can Close Without Merging the present PR, and you can re-create a fresh PR in your fork of repo. If you create a PR, start from/ base it on the latest, up-to-date pull from "main" branch.

At github in your fork of the edge-developer repo, sync your fork of repo to catch up to upstream "main" branch, similar to this UI for a fork:

Before editing a .md file, make sure it's in the expected, latest state, with latest changes per "main" or "live" branch. (Being careful here b/c of previous problem w/ merges.)

[learn-build-service-prod]

Learn Build status updates of commit 8ae6f5e:

✅ Validation status: passed

File	Status	Preview URL	Details
microsoft-edge/webview2/how-to/debug-visual-studio-code.md	✅Succeeded	View

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[learn-build-service-prod]

Learn Build status updates of commit 871d5a2:

✅ Validation status: passed

File	Status	Preview URL	Details
microsoft-edge/webview2/how-to/debug-visual-studio-code.md	✅Succeeded	View

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[mikosg]

@mikehoffms: I've created another PR for this: #3414.

You can terminate this one.

[mikehoffms]

closing this PR 3397, it is replaced by #3414
@mikosg