[stable28] Various fix from 30

[artonge]

Manual partial backport of #2514

Leaving out

• fix: Populate photosLocationFolder on init - no needed
• chore: Fix typo in collection.js - not visible
• chore: Use NcSelect label - no error in the browser console
• fix: Don't proceed with album creation if it fails - 29 does not need the extra error handling
• chore: Explicitly require @nc/router - only to make linter happy, so superfluous
• fix: Specify a source for the tmp local album - no error in the browser console
• fix: Declare photosLocationFolder as computed - not needed
• fix: Reinit the files in File.vue - not needed