failing test showing extra views w/makeBoundHelper
[BUGFIX beta] makeBoundHelper optimized unbound

makeBoundHelper now optimizes unbound parameters.
If none of the values are Streams in params or
the options hash, we can take the performance
fast path and just return a string. This is both
faster and doesn’t create extra view objects.

refs GH-9902
Merge pull request #9909 from fivetanley/make-bound-helper-perf-optimizations

[BUGFIX beta] makeBoundHelper should act as if the helper is unbound when parameters aren't bound. [perf]
[BUGFIX beta] Do not stringify null classes, allow unquoted bind-attr class