fix(ngValue): set value property instead of attribute

[m-amr]

in case of input element set value usering property instead of attribute
fixed #13984

[gkalpak]

I don't think this is the right fix. The behavior of $set should not be changed imo.
The change must be local to ngValue.

[m-amr]

@gkalpak ,
Thanks for replying.
I tried to solve the problem inside the $set so it can be used in any other place,
and i followed the same way that the set method used to handle boolean values
snipped from $set method

   if (booleanKey) {
      this.$$element.prop(key, value);
      attrName = booleanKey;
    } else if (aliasedKey) {
      this[aliasedKey] = value;
      observer = aliasedKey;
    }

but based on your opinion That the change must be local to ngValue
this pull request
#14031

I solved the problem locally to ngValueDirective
could you please check it.
Thanks

[gkalpak]

Closing in favor of #14031.