fix(Renderer): the scrollLeft reset logic when the element is not scr…

[xiaoliyooo]

Short description

Resolves #
fix #3767
fix #4238

Implementation details

How to test it

Screenshots

Checklist

• This PR is covered by e2e tests
• It introduces no breaking API changes

[katspaugh]

Thanks again! 👍

[Copilot]

Pull Request Overview

This PR fixes a bug where the scroll position could remain non-zero when the waveform becomes non-scrollable (e.g., after zooming out). The change ensures that when a waveform is not scrollable, any lingering scroll position is reset to 0 during re-render.

• Adds logic in reRender() to reset scroll position to 0 when content is not scrollable
• Adds test coverage for the new behavior when zooming to non-scrollable state
• Updates existing scroll position test to explicitly set zoom level for scrollable state

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/renderer.ts	Adds condition to reset scrollLeft to 0 when waveform is not scrollable
src/tests/renderer.test.ts	Adds test for non-scrollable scroll reset and updates existing test to explicitly zoom

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[TrevorHinesley]

Just FYI, this does not fix #4238. If the waveform is zoomed in and scrolled to the right, then when you zoom out partially (but not all the way zoomed out), the waveform still disappears. I pulled it down and tested.