Make scrollBoundsIntoView support RTL

[RoboErikG]

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Description

Currently, WorkspaceSvg.scrollBoundsIntoView only works in LTR languages and in RTL languages it still prioritizes scrolling the left side into view over the right.

Reproduction steps

1. Add rtl: true to the injection options for keyboard navigation
2. Create a really long math block that is wider than the viewport
3. Use keyboard navigation to move it around

Stack trace

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