Highlight package uninstallable versions

[phadej]

E.g. there are issues like UnkindPartition/tasty#426

When there is a revision like base <0, the hackage deprecation would only affect UI.
Let's make hackage smart enough to figure that out without a a deprecation.

As deprecation is also written to index, it's redundant information added there for no reason.

Semi-deciding out whether package has unjustifiable constraint should be easy:

• look at library components condition trees top-level
• look at build-depends
• if any version range is empty (https://hackage.haskell.org/package/Cabal-syntax-3.12.1.0/docs/Distribution-Types-VersionInterval-Legacy.html#v:asVersionIntervals), mark as uninstallable.

This information would make sense to calculate on upload and revisions.