chore: tiny improvements for "convertValue"

We don't need to check each value's satisfication so
when one meets, the loop can be broken.

lib/core/utils.js

@@ -20,18 +20,19 @@ function convertObject(obj, ignore) {
 function convertValue(key, value, ignore) {
   if (is.nullOrUndefined(value)) return value;
 
-  let hit;
+  let hit = false;
   for (const matchKey of ignore) {
     if (is.string(matchKey) && matchKey === key) {
       hit = true;
+      break;
     } else if (is.regExp(matchKey) && matchKey.test(key)) {
       hit = true;
+      break;
     }
   }
   if (!hit) {
     if (is.symbol(value) || is.regExp(value)) return value.toString();
-    if (is.primitive(value)) return value;
-    if (is.array(value)) return value;
+    if (is.primitive(value) || is.array(value)) return value;
   }
 
   // only convert recursively when it's a plain object,