Fix buttons on wishlist products

[SharakPL]

Questions	Answers
Description?	Product buttons in wishlists didn't get proper labels and styling, because of invalid checks. product.customizable is an INT, not a STRING.
Type?	bug fix
BC breaks?	no
Deprecations?	no
Fixed ticket?	Fixes #{issue URL here}, Fixes #{another issue URL here}
Sponsor company	Your company or customer's name goes here (if applicable).
How to test?	1. Add different products to your wishlist, including 1 out of stock and 1 customizable 2. Check your wishlist 3. Apply this PR and build assets 4. Check your wishlist again

before

after

[AureRita]

Hi @SharakPL

Thank you for your PR, currently when I test it, I didn't have the expected behavior, on hummingbird :

And on classic theme :

recording.127.webm

Tested on 8.1x and develop.

Have you some idea of why this doesn't works ?

Waiting for feedback

[AureRita]

Hi @SharakPL

after some review with you, I see that the PR seems to works as expected on

Hummingbird

recording.129.webm

and on classic theme

so its QA ✔️

Thank you !

[SharakPL]

Thanks @AureRita