Incorrect number comparison in lenient json comparisons

[zakhenry]

Which version of Kotest are you using
master

This is best explained with a failing test so here goes:

            shouldFail {
               "1.0E-3" shouldEqualJson "0.0001"
            }
            "1.0E-4" shouldEqualJson "0.0001"

both of these assertions fail - 1.0E-3 is considered equal to 0.0001 (off by one zero) and 1.0E-4 really is 0.0001 but the assertion doesn't think so.

Digging in to this there are two separate issues:

1. the lenient option is using a regex to trim irrelevant trailing zeroes after the decimal point, but doesn't use a $ (end of input) sigil so all the intervening (significant) zeroes are stripped
2. the comparison of scientific notation numbers does not deal with the scenario where one of expected or actual is denoted with exponential numbers and the other is not, but parsing as Double does not turn it back to regular notation.

I have a fix, so will raise that as a PR shortly, but raising the issue in case my PR is not accepted and someone else wants to take a crack.