[FIX] component: updateProps: validation and default values

Before this rev., default values weren't taken into account when
validating props whenever a component was updated. Moreover, there
was no test attesting that props were validated at update.

tests/component/__snapshots__/props_validation.test.ts.snap

@@ -20,7 +20,6 @@ exports[`props validation props are validated in dev mode (code snapshot) 1`] =
         w3 = false;
     }
     if (w3) {
-        utils.validateProps(w3.constructor, props3)
         w3.__updateProps(props3, extra.fiber, undefined, undefined, sibling);
         let pvnode = w3.__owl__.pvnode;
         c1.push(pvnode);