fix(admin-ui): Preserve decimal numbers when locale uses commas (#5641)

**What**
- Ensure that we format numbers with `.` as the decimal separator, even when the users locale uses `,`. This changes still allows users to use comma as the decimal separator, but the transformation we use before writing to state converts the number to use a dot instead.

packages/admin-ui/ui/src/domain/pricing/forms/price-list-product-prices-form/price-list-product-prices-form.tsx

@@ -1830,6 +1830,7 @@ const Cell = React.forwardRef<HTMLInputElement, CellProps>(
           ? formatValue({
               value: strippedValue.replace(/,/g, "."), // If the current locale uses commas as decimal separators, then we need to replace them with dots.
               decimalScale: decimalScale ?? 0,
+              decimalSeparator: ".",
               disableGroupSeparators: true,
             })
           : ""