[php-src] Issue #13949: Using NumberFormatter::DECIMAL_ALWAYS_SHOWN adds the currency symbol to format() method output

Issue: https://github.com/php/php-src/issues/13949 Author: ivanhoe011 ### Description The following code: ```php <?php $formatter = new NumberFormatter('en_US', NumberFormatter::DECIMAL_ALWAYS_SHOWN); var_dump($formatter->format(1234)); ``` Resulted in this output: ``` string(9) "$1,234.00" ``` But I expected this output instead: ``` string(8) "1,234.00" ``` Note the currency symbol $ in front of the number which the format() method is not supposed to add (as far as I could decipher the documentation). Tested in versions 8.2.16 - 8.2.18, 8.3.0 - 8.3.6 on https://3v4l.org/RiejZ ### PHP Version 8.2.18 and 8.3.6 ### Operating System _No response_