PM/AM calculation problems in customizible options

[TomashKhamlai]

Related to #761. Reproduced on #804

Preconditions (*)

1. A Simple Product with customizable option Date&Time. SKU: simple-product-date

Steps to reproduce (*)

1. Create empty cart
2. Find an option_id

   {
   products(
   filter: {
     sku: {
       eq: "simple-product-date"
     }
   }
   ) {
   items {
     ... on CustomizableProductInterface {
       options {
         option_id
       }
     }
   }
   }
   }

3. Add product to cart

   mutation {
   addSimpleProductsToCart(
   input: {
     cart_id: "XNpDkymvFOQBmxyDExJmgJdEZvjtFubt"
     cart_items: {
       data: {
         quantity: 1
         sku: "simple-product-date"
       }
       customizable_options: [
         {
           id: 5
           value_string: "01-01-01 14:00:05"
         }
       ]
     }
   }
   ) {
   cart {
     items {
       id
       quantity
       product {
         sku
         stock_status
       }
       ... on SimpleCartItem {
         customizable_options {
           id
           label
           values {
             id
             label
             value
           }
         }
       }
     }
   }
   }
   }

4. Check the cart on storefront

Expected result (*)

1. The time part of the date 01-01-01 14:00:05 is displayed as 02:00 PM

Actual result (*)

1. The time part of the date 01-01-01 14:00:05 is displayed as 02:00 AM