hint and id prop are not used in NcSettingsSelectGroup

[raimund-schluessler]

The hint and id props of NcSettingsSelectGroup are not in use
https://github.com/nextcloud/nextcloud-vue/blob/3c61fd5ecd55253e01ba6716311432c95654985f/src/components/NcSettingsSelectGroup/NcSettingsSelectGroup.vue#L69-L84

This makes me wonder whether this component is actually used somewhere. A search in the Nextcloud org https://github.com/search?q=org%3Anextcloud+SettingsSelectGroup&type=code does not show any usage either. Also, it lacks a documentation example, so it's really hard to know where/how and if to use it. And, as a bonus, after the initial commit in #653 I was the only one committing to the file https://github.com/nextcloud/nextcloud-vue/commits/master/src/components/SettingsSelectGroup/SettingsSelectGroup.vue 😆 🙈

All in all, this looks like the component should be either deprecated or reworked, I guess. The reason why I ask this is that we need to migrate from NcMultiselect to NcSelect (see #3743) for the vue3 migration latest and I want to know whether it's worth the effort here.

Some input from @GretaD @juliushaertl @skjnldsv @ChristophWurst would be highly appreciated (you took care of the initial PR).

[raimund-schluessler]

Seems it was more or less copied from https://github.com/nextcloud/richdocuments/blob/main/src/components/SettingsSelectGroup.vue which shares some of the same oddities.

[raimund-schluessler]

Fixed with #4120.