crypto: use validateObject

The `validateObject()` validator can be used to cleanup validation and
keep consistency.
PR-URL: #39872
Reviewed-By: Zijian Liu <lxxyxzj@gmail.com>
Reviewed-By: Khaidi Chu <i@2333.moe>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: VoltrexKeyva

lib/internal/crypto/keys.js

@@ -299,8 +299,7 @@ function isStringOrBuffer(val) {
 }
 
 functionparseKeyEncoding(enc,keyType,isPublic,objName){
-if(enc===null||typeofenc!=='object')
-thrownewERR_INVALID_ARG_TYPE('options','object',enc);
+validateObject(enc,'options');
 
 constisInput=keyType===undefined;