fix(number-field): negative numbers handled

packages/number-field/src/NumberField.ts

@@ -464,6 +464,8 @@ export class NumberField extends TextfieldBase {
     }
 
     private validateInput(value: number): number {
+        const signMultiplier = value < 0 ? -1 : 1;
+        value *= signMultiplier;
         if (typeof this.min !== 'undefined') {
             value = Math.max(this.min, value);
         }
@@ -489,6 +491,7 @@ export class NumberField extends TextfieldBase {
                 }
             }
         }
+        value *= signMultiplier;
         return value;
     }