Fix comparison with infinity

[tofpie]

This Pull Request fixes/closes #1000 .

It changes the following:

• Comparison between numbers

[codecov]

Codecov Report

Merging #1001 (36eac72) into master (f34e0b5) will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master    #1001   +/-   ##
=======================================
  Coverage   59.95%   59.95%           
=======================================
  Files         166      166           
  Lines       10857    10857           
=======================================
  Hits         6509     6509           
  Misses       4348     4348           

Impacted Files	Coverage Δ
boa/src/builtins/number/mod.rs	63.11% <0.00%> (ø)

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[RageKnify]

Leaving here for accessibility.

Test262 conformance changes:

Test result	master count	PR count	difference
Total	78,493	78,493	0
Passed	19,634	19,644	+10
Ignored	15,585	15,585	0
Failed	43,274	43,264	-10
Panics	430	430	0
Conformance	25.01	25.03	+0.01%

I assume a tarpaulin bug is making it so the changed code isn't seen as hit by the tests.

[Razican]

Thanks!