ViewContainer should hydrate element injector after linking it

[vsavkin]

Consider the following:

class ChildDirective {
  constructor(@Ancestor() parentDirective:ParentDirective){}
}

ParentDirective and ChildDirective are used as follows.

<parent>
  <div template="if true">
      <child></child>
  </div>
</parent>

This example should work, but it currently throws. It throws because we are hydrating the child element injector before attaching it to the tree, so it cannot find ParentDirective.

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