Second "#of beams" window for Storm Rain when used in dual setup (self-cast and with ballista totems)

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Is your feature request related to a problem?

When two separate Storm Rain setups are present in a build, only one "# of overlapping beams" window is available. This generates incorrect DPS values, as the two skills have different damage calculations based on different supports, but they both use the same window.

Describe the solution you'd like

Enable a second window for the number of beams when a skill setup with a ballista totem + storm rain is present alongside self-cast storm rain.

Describe alternatives you've considered

An alternative workaround could be for the single window to count overlapping beams of all Storm Rain instances at once, but I don't see how it would correctly calculate DPS for those said instances.

Additional context

Current PoB for reference: https://pastebin.com/bpCdMzBY

In der Issue wird keine Datei und kein Test genannt. Beginne damit, das vorhandene Storm Rain-Fenster "# of overlapping beams" und die Behandlung von self-cast- und ballista-totem-Setups zu finden; fertig ist die Aufgabe, wenn die beiden Setups separate beam counts verwenden und korrekte DPS-Werte erzeugen.