Print non-integer number at full precision in inspect mode

[ntkme]

• Closes Fuzzy equality requires precision of 11 while dart-sass only has precision of 10 sass#3953

sass/sass-spec#2067

[ntkme]

I did a GitHub search to find out where people are using or abusing meta.inspect. It turns out most of them are just abuses where it can be replaced with interpolation, list append, etc. In those cases this shouldn't really affect the behavior of the output.

It seems that the "legit" real world usage where this proposed change may have a small impact is: https://github.com/oddbird/true/blob/cfcd111acf0c168fd2f02cfa0c2a939dd199c189/sass/data/_details.scss#L127

@mirisuzanne @jgerigmeyer I think this change would actually make the "unpredictable" slightly better, but it would require change to the logic linked above. If you need to support both sass before and after this change, it can be implemented with a feature detection with meta.inspect(1.00000000001) == meta.inspect(1) to see if it supports high precision output for numbers in inspect mode or not.

@nex3 Any thoughts?