[BUG] kirby slides sometimes breaks when slides input is updated

[RasmusKjeldgaard]

• I have written a good issue

Describe the bug

When kirby-slides slides input is updated asynchronosly, but with a new object that causes us to re-render the individual slides without re-rendering the slides component itself, swiper.js no longer has the correct slides references to apply its styles to.

Expected:

Actual:

Describe how to reproduce the bug

Repro (and suggested fix) by @troelslenda: develop...reproduced-slides-bug

Which Kirby version was used?

8.7.0

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