Fix: null (visual) categories in Settings/Downloads/Exclude

[cuong-tran]

[MajorTanya]

Would it be possible to use slightly more informative names for v and e?

[AntsyLich]

We should be cleaning up the invalid IDs instead of doing this

[cuong-tran]

We should be cleaning up the invalid IDs instead of doing this

they are not invalid, it's just that it's not ready loaded on first screen load so the subtitleProvider couldn't map anything.

Original caused after this PR: #1364

[cuong-tran]

Would it be possible to use slightly more informative names for v and e?

I actually copied the default block from inside that method

[MajorTanya]

Would it be possible to use slightly more informative names for v and e?

I actually copied the default block from inside that method

Would still be good if we had specific names in this location as opposed to the general purpose v, e in the block
That way it's actually readable in this state (right now I have no idea what v and e are)

[AntsyLich]

Why is this an issue? Doesn't the items get replaced with actual name afterwards?

[MajorTanya]

Why is this an issue? Doesn't the items get replaced with actual name afterwards?

Are you talking about my comment or why the categories get listed as "null"?

[AntsyLich]

I'm talking about the PR

[cuong-tran]

the entries are push to MultiSelectListPreferences when page is first created then mapped to categories' name; but at that moment categories catalog is still empty (due to PR #1364) hence all entries' name are null. After a bit the categories are loaded by subscribe but MultiSelectListPreferences does not recompose.