[iPad] Set correct popup for left and right keys

[christianbilodeau]

Contributor checklist

• This pull request is on a separate branch and not the main branch

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Description

This PR fixes the popups (left, middle, right) for the keys on iPad.
Tested all supported language keyboards on iPad simulators.

Related issue

• [iPad] Wrong popup for some keys on larger iPad models #509

[github-actions]

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[andrewtavis]

The CI error is a known error, @christianbilodeau. We're looking into it a bit in #506 :)

[andrewtavis]

Sorry for the wait here, @christianbilodeau! I've been quite busy with mentoring for Outreachy over October and am just starting to be able to work on iOS again :) Really appreciate the attention to detail for this issue and the fix here!