Reordering variants shuffles prices

[remiduval]

Bug Description

Initial order:
Variant 1 - £10
Variant 2 - £20
Variant 3 - £30

If I reorder the variants, the prices won't reorder properly:
Variant 1 - £10
Variant 3 - £20
Variant 2 - £30

That's only on display - when saving, prices are saved properly. But someone using the CP would have probably corrected the prices after reordering, causing confusion when saving and refreshing.

Steps to reproduce

1. Create a product with variants
2. Create a few variants, remember their prices
3. Reorder them - price are shuffled
4. Save the product and refresh the page - prices are in the right order again

Environment

Statamic 3.3.35 Pro
Laravel 8.83.23
PHP 8.1.9
4rn0/statamic-v3-image-optimizer 1.0.16
aryehraber/statamic-logbook 2.1.0
doublethreedigital/duplicator 2.3.2
doublethreedigital/guest-entries 1.2.1
doublethreedigital/simple-commerce 3.2.20
optimoapps/statamic-bard-text-align 1.0.2
rias/statamic-redirect 2.4.0
xndbogdan/statamic-bard-text-color 2.4.1

[github-actions]

Released as part of v4.0.1.