NumericField formatting error in certain locales

[forsdahl]

Affected Version

4.11

Description

NumericField has a formatting error when using the CMS in at least the Swedish and Finnish locales. If you input a number greater than or equal to 1000, the next time the form is saved the number will be empty, or you will get a validation error. This seems to be caused by some problem with the php NumberFormatter and space as grouping separator. If you disable grouping in getFormatter, the problem is resolved:

$formatter->setAttribute(NumberFormatter::GROUPING_USED, false);

The general solution might be to disable number grouping for all locales that have space as the grouping symbol? Like so:

if ($formatter->getSymbol(NumberFormatter::GROUPING_SEPARATOR_SYMBOL) == ' ') {
    $formatter->setAttribute(NumberFormatter::GROUPING_USED, false);
}

Steps to Reproduce

Switch to Swedish locale in the CMS, and try to store a number greater than or equal to 1000 multiple times in any NumericField.

[GuySartorelli]

This is a duplicate of #6910 - but given this issue has more details, I will close the other one.

[GuySartorelli]

Closing as a duplicate of #11162 which has an attached PR that got merged.