WooCommerce Measurement Price Calculator 3.23.6

* Fix - Resolve an issue with the price calculator not allowing the width to be independently changed.
* Fix - Resolve an issue with products "Sold Individually" unexpectedly having their price changed when updating the quantity of a different item in the same cart

* Fix - Resolve an issue with variable products and decimal comma separator where the incorrect default empty values would be saved for variations
* Fix - Ensure that pricing calculator products are considered in stock when they have a stock quantity greater than 0 but lower than 1
* Fix - Do not allow user-defined negative input values when accepting free-form customer input

* Tweak - Ignore the thousands separator when displaying a large value in the area or volume fields
* Fix - When saving area or volume, make sure decimal values are properly formatted before saving to the database to avoid floating point issues