[Deploy preview] Allow seeing different assembly code for the same function

[mstange]

If a JS function is JIT compiled multiple times, then it's currently impossible to see the assembly code for each compilation. If you double-click the call node for the function, the assembly view shows an arbitrary compilation. It doesn't even try to find the one with the highest sample count.

This PR makes it so that the compilation with the highest sample count is chosen, and allows navigating between the different compilations.