Inlining functions of Unboxed vector consumes a lot of memory

For quite some time test suite `vector-tests-O2` was unbuildable on CI for newer ghc versions 8.2 - 8.10 See:
* #272
* https://ghc.haskell.org/trac/ghc/ticket/13535

The culprit was Unboxed vector, in particular compiling the full collection of `Tests.Vector.Property.testPolymorphicFunctions` properties restricted to `Unboxed` vector was consuming the most memory (~15Gb) (probably because it has the most number of properties). As a temporary fix #273 disables inlining of that collection of properties for `Unboxed` vector only. Compilation of `Tests.Vector.Unboxed` still takes the most amount of memory, but it is bearable ~1Gb