[Feature]: Add option to change spellchecking method

[Larssson]

Describe the feature/enhancement you need

In Edge it's possible to choose between two spellchecking methods, Basic and Microsoft Engine under under edge://settings/languages. WebView2 seems to behave like it's using the basic method but we'd like it to use Microsoft Editor.

The scenario/use case where you would use this feature

All textareas where users enter long texts.

How important is this request to you?

Impactful. My app's user experience would be significantly compromised without it.

Suggested implementation

In Edge browser this can be configured through the following group policy settings under SOFTWARE\Policies\Microsoft\Edge.

SpellcheckEnabled
MicrosoftEditorProofingEnabled

It would be nice to have the same policies available under SOFTWARE\Policies\Microsoft\Edge\WebView2.

What does your app do? Is there a pending deadline for this request?

No response