SharedArrayBuffers can cause crashes when inspected in certain ways

[MSLaguana]

Something non-obvious has changed between the current state of things and the nightly integration I'm about to complete, which causes shared array buffers to return a null pointer for their contents, which is triggering an assert in node. I'm disabling the test for now.

[MSLaguana]

I'm still not sure what change caused this to come to the surface, but it looks like the problem is we don't currently have a JSRT way to extract the contents of s SharedArrayBuffer; There are JsGetArrayBufferStorage and JsGetTypedArrayStorage but neither of those accept shared array buffers as inputs.

[kfarnung]

Disabled in 06ff556

[MSLaguana]

This is also impacting test-assert-typedarray-deepequal.js