fix(dav): multiple fixes in usage of webdav library

[pulsejet]

1. Refresh token on update
2. Fix some very weird imports
3. Patch fetch instead of request to prevent accessing impl details

[skjnldsv]

3. Patch fetch instead of request to prevent accessing impl details

Can you clarify what is this about? :)

[pulsejet]

3. Patch fetch instead of request to prevent accessing impl details

Can you clarify what is this about? :)

To patch request, we need

import { request } from 'webdav/dist/node/request.js'

This is an implementation detail of the webdav library and also needs the node polyfills. Instead we can just patch fetch which is equivalent since request just calls fetch with the same options (and we're just changing the method anyway).

BTW, fixed the style to align with nextcloud-files

[pulsejet]

I want to point out that things might be broken without this patch in 28. When the refresh token changes, the WebDAV clients are never updated in RC.1

This is not a feature, it's a fix to a regression.

[pulsejet]

/compile amend /

[pulsejet]

CI failure seems unrelated