Map filter not set appropriately when spy panel is open

[stacey-gammon]

To reproduce:

1. Create a coordinate map visualization.
2. Open the spy pane toggle
3. Save the map
4. Add it to a dashboard.

The filter will not be set, in addition I'm having trouble toggling the spy pane after that.

The issue is in maps_visualizations when this._kibanaMap.getUntrimmedBounds(); is called - it returns undefined when the spy pane in the map visualization is opened.

cc @nreese @ppisljar.

[ppisljar]

getUntrimmedBounds() should return maximum bounds if it can't determine the bounds correctly instead of returning undefined.

[nreese]

The bounds get returned but there is not map height (the latitudes are equal for the 2 points).

In this case, the height will have to be a best guess. Do we know the gridster layout at this point? Maybe the height can be set to the width * the panel width/height ratio. Or, if there is not gridster data, the height could just be set to the width. How does this sound? I can work on the fix, but just want to make sure everyone is ok with the solution first.