[UI] Decider combinator input signals preview minimum height

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TL;DR

Decider combinator's UI for preview of input signals should have a minimal height of 2 lines when both red & green input wires are connected.

Why?

Here's how DC looks like with no rules and two connected wires:

01-02-2025, 18-57-10.png (154.17 KiB) Viewed 455 times

And here's the same red & green wires but with the long set of rules.

01-02-2025, 18-56-44.png (303.41 KiB) Viewed 455 times

As you can see here, you can't see green signals here unless you use barely-visible and purely-impractical scroll.

[Muche]

Ref 126808 Combinator UI resize self and hide scroll bar.

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Improved in 127286: Version 2.0.39. (Ref: 126808: [Klonan] [2.0.34] Combinator UI resize self and hide scroll bar)
Now input signals always show a minimum of 1.5 rows if only 1 row is present, and a minimum of 2 if 2+ rows present, however it's no longer aligned with Output signals:

03-05-2025, 23-04-06.png (257.53 KiB) Viewed 227 times