[JS] Correctly format field with numbers (bug 1811694, bug 1811510)

In PR #15757, a value is automatically converted into a number when it's possible
but the case of numbers like "000123" has been overlooked and their format must
be preserved.
When a script is doing something like "foo.value + bar.value" and the values are
numbers then "foo.value" must return a number but the displayed value must be what
the user entered or what a script set, so this patch is just adding a a field
_orginalValue in order to track the value has it has defined.
Some people are used to use a comma as decimal separator, hence it must be considered
when a value is parsed into a number.
This patch is fixing a regression introduced by #15757.

src/scripting_api/event.js

@@ -249,7 +249,8 @@ class EventDispatcher {
 
       this.runCalculate(source, event);
 
-      const savedValue = (event.value = source.obj.value);
+      const savedValue = source.obj._getValue();
+      event.value = source.obj.value;
       let formattedValue = null;
 
       if (this.runActions(source, source, event, "Format")) {

src/scripting_api/field.js

@@ -251,14 +251,19 @@ class Field extends PDFObject {
       this._value = "";
     } else if (typeof value === "string") {
       switch (this._fieldType) {
-        case FieldType.none:
-          this._value = !isNaN(value) ? parseFloat(value) : value;
+        case FieldType.none: {
+          this._originalValue = value;
+          const _value = value.trim().replace(",", ".");
+          this._value = !isNaN(_value) ? parseFloat(_value) : value;
           break;
+        }
         case FieldType.number:
-        case FieldType.percent:
-          const number = parseFloat(value);
+        case FieldType.percent: {
+          const _value = value.trim().replace(",", ".");
+          const number = parseFloat(_value);
           this._value = !isNaN(number) ? number : 0;
           break;
+        }
         default:
           this._value = value;
       }
@@ -267,6 +272,10 @@ class Field extends PDFObject {
     }
   }
 
+  _getValue() {
+    return this._originalValue ?? this.value;
+  }
+
   _setChoiceValue(value) {
     if (this.multipleSelection) {
       if (!Array.isArray(value)) {

src/scripting_api/proxy.js

@@ -63,7 +63,7 @@ class ProxyHandler {
         typeof old !== "function"
       ) {
         const data = { id: obj._id };
-        data[prop] = obj[prop];
+        data[prop] = prop === "value" ? obj._getValue() : obj[prop];
 
         // send the updated value to the other side
         if (!obj._siblings) {