* via window.postMessage
closes INTEROP-6628
flag=none
test plan:
- launch an lti 1.3 tool
- open the dev tools, go to the console tab
- there should be a dropdown for choosing the context of the console,
and it might default to "top"
- find and select the context of the iframe that holds the 1.3 tool
- paste this into the console:
```
window.parent.postMessage({messageType: "toggleCourseNavigationMenu"},"*");
```
- the course nav should collapse
- run it again and the course nav should expand
Change-Id: Iffaefc26be4e9f1c1b63a1e5697329ceb2395449
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/263037
Tested-by: Service Cloud Jenkins <svc.cloudjenkins@instructure.com>
Reviewed-by: Mysti Lilla <mysti@instructure.com>
Reviewed-by: Tucker Mcknight <tmcknight@instructure.com>
QA-Review: Tucker Mcknight <tmcknight@instructure.com>
Product-Review: Xander Moffatt <xmoffatt@instructure.com>
9cd9ef05ce