Fix resetting vertical axis when using non-uniform zoom on Time Series

[Wumpf]

What

• Fixes Time series view's nonuniform zoom action resets vertical axis #5180

@Reviewer: Best to try it yourself, took a fair bit of time to get the desired behavior in (presumably) all cases.

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[jleibs]

Trying this out myself, I see two issues:

1. If I've messed around with the range and then I click "Lock Range", in the selection panel the range does not become locked to the intended value. I have to double-click to now get it to jump to the locked range.
2. When the range is locked I can still pan vertically, even though scroll vertically is disabled.

[jleibs]

Still makes me sad how complex this feels, but it overall makes sense and seems to be a net improvement! Thanks!