fix(compat/isNaN): improve NaN checks for boxed values and non-numbers

src/compat/predicate/isNaN.spec.ts

@@ -9,6 +9,11 @@ describe('isNaN', () => {
 
   it('should return `false` for non-NaN numbers', () => {
     expect(isNaN(0)).toBe(false);
+    expect(isNaN(new Number(0))).toBe(false);
+  });
+
+  it('should return `true` for boxed NaN', () => {
+    expect(isNaN(new Number(NaN))).toBe(true);
   });
 
   it('should return `false` for non-numbers', () => {

src/compat/predicate/isNaN.ts

@@ -1,3 +1,5 @@
+import { isNumber } from './isNumber';
+
 /**
  * Checks if the value is NaN.
  *
@@ -10,6 +12,6 @@
  * isNaN('NaN'); // false
  * isNaN(undefined); // false
  */
 export function isNaN(value?: any): boolean {
-  return Number.isNaN(value);
+  return isNumber(value) && Number.isNaN(Number(value));
 }