3.0 regression/inconsistency when comparing a float to a numeric string with trailing space

[guilliamxavier]

This is a proper bug report for PR #3256.

Code sample:

{{ 42 == '42' ? '.' : 'F' -}}
{{ '42' == 42 ? '.' : 'F' -}}
{{ 42 == ' 42' ? '.' : 'F' -}}
{{ ' 42' == 42 ? '.' : 'F' -}}
{{ 42 == '42 ' ? '.' : 'F' -}}
{{ '42 ' == 42 ? '.' : 'F' -}}
{{ 42.0 == '42.0' ? '.' : 'F' -}}
{{ '42.0' == 42.0 ? '.' : 'F' -}}
{{ 42.0 == ' 42.0' ? '.' : 'F' -}}
{{ ' 42.0' == 42.0 ? '.' : 'F' -}}
{{ 42.0 == '42.0 ' ? '.' : 'F' -}}
{{ '42.0 ' == 42.0 ? '.' : 'F' -}}

Output in v1.42.0 and v2.12.5:
............

Output in v3.0.3:
..........FF

Note that only the "float with trailing space" tests fail (whereas the "float with leading space" tests pass, and all the "int" tests pass).

Mini test harness: https://twigfiddle.com/6angrk