Conditional Number Formats that only can match negative numbers shouldn't display the sign

[snoopyjc]

In excel, if you have a number format, with a [condition], and that condition can only match negative numbers, then the sign of the value is suppressed. SSF.format incorrectly gives the sign. For example:

SSF.format('[Red][<=-25]General;[Blue][>=25]General;[Green]General;[Yellow]General', -25)

gives -25 instead of 25.

[snoopyjc]

The test case in oddities.json line 153 is also incorrect.

[reviewher]

Using format [Red][<=-25]General;[Blue][>=25]General;[Green]General;[Yellow]General in Excel 2019:

Using format [Red][<=0]General;[Blue][>=25]General;[Green]General;[Yellow]General in Excel 2019: