Use elementType instead of element

Co-authored-by: Kevin Read <me@kevin-read.com>
Co-authored-by: Pablo Palacios <pablo.palacios@holidaycheck.com>

Author: 2 people

src/ReactShallowRenderer.js

@@ -515,7 +515,7 @@ See https://fb.me/react-invalid-hook-call for tips about how to debug and fix th
 
     this._rendering = true;
     this._element = element;
-    this._context = element.contextType
+    this._context = elementType.contextType
       ? context
       : getMaskedContext(elementType.contextTypes, context);