Avoid some theme style properties leaking into the Cart and Checkout select controls

[Aljullu]

Some themes are adding styles to hovered buttons that don't make sense in our Select component (ie: Hello theme sets the button text color to white when hovered, making the text invisible). This PR explicitly defines all select styles for the different states, making it harder for themes to break the select component.

It also forces the text to be left-aligned.

Screenshots

Screenshot of the issue:

How to test the changes in this Pull Request:

1. In Storefront (and, optionally, other themes), make sure there are no regressions with selects in Cart & Checkout address forms.
2. Install the Hello theme from Elementor and make sure text in selects is visible when hovered and is left aligned.

Changelog

Avoid some theme style properties leaking into the Cart and Checkout select controls.

[github-actions]

Size Change: -8 B (0%)

Total Size: 1.78 MB

Filename	Size	Change
build/style-rtl.css	16.5 kB	-4 B (0%)
build/style.css	16.5 kB	-4 B (0%)

ℹ️ View Unchanged

Filename	Size	Change
build/active-filters-frontend.js	7.26 kB	0 B
build/active-filters.js	7.89 kB	0 B
build/all-products-frontend.js	71.9 kB	0 B
build/all-products.js	15.7 kB	0 B
build/all-reviews-legacy.js	9.19 kB	0 B
build/all-reviews.js	9.46 kB	0 B
build/attribute-filter-frontend.js	16.7 kB	0 B
build/attribute-filter.js	11.5 kB	0 B
build/block-error-boundary-legacy.js	774 B	0 B
build/block-error-boundary.js	775 B	0 B
build/blocks-legacy.js	2.92 kB	0 B
build/blocks.js	2.92 kB	0 B
build/cart-frontend.js	113 kB	0 B
build/cart.js	32.3 kB	0 B
build/checkout-frontend.js	129 kB	0 B
build/checkout.js	37.9 kB	0 B
build/custom-select-control-style-legacy.js	782 B	0 B
build/custom-select-control-style.js	782 B	0 B
build/editor-legacy-rtl.css	12.5 kB	0 B
build/editor-legacy.css	12.5 kB	0 B
build/editor-rtl.css	13.5 kB	0 B
build/editor.css	13.5 kB	0 B
build/featured-category-legacy.js	7.26 kB	0 B
build/featured-category.js	7.53 kB	0 B
build/featured-product-legacy.js	9.5 kB	0 B
build/featured-product.js	9.79 kB	0 B
build/handpicked-products-legacy.js	6.9 kB	0 B
build/handpicked-products.js	7.18 kB	0 B
build/panel-style-legacy.js	773 B	0 B
build/panel-style.js	773 B	0 B
build/price-filter-frontend.js	14.1 kB	0 B
build/price-filter.js	9.98 kB	0 B
build/product-best-sellers-legacy.js	6.98 kB	0 B
build/product-best-sellers.js	7.24 kB	0 B
build/product-categories-legacy.js	3.22 kB	0 B
build/product-categories.js	3.21 kB	0 B
build/product-category-legacy.js	7.89 kB	0 B
build/product-category.js	8.15 kB	0 B
build/product-list-style-legacy.js	775 B	0 B
build/product-new-legacy.js	7.13 kB	0 B
build/product-new.js	7.41 kB	0 B
build/product-on-sale-legacy.js	7.5 kB	0 B
build/product-on-sale.js	7.8 kB	0 B
build/product-search-legacy.js	3.12 kB	0 B
build/product-search.js	3.36 kB	0 B
build/product-tag-legacy.js	6.07 kB	0 B
build/product-tag.js	6.33 kB	0 B
build/product-top-rated-legacy.js	7.11 kB	0 B
build/product-top-rated.js	7.38 kB	0 B
build/products-by-attribute-legacy.js	7.87 kB	0 B
build/products-by-attribute.js	8.13 kB	0 B
build/reviews-by-category-legacy.js	11.2 kB	0 B
build/reviews-by-category.js	11.5 kB	0 B
build/reviews-by-product-legacy.js	12.7 kB	0 B
build/reviews-by-product.js	13 kB	0 B
build/reviews-frontend-legacy.js	8.03 kB	0 B
build/reviews-frontend.js	8.95 kB	0 B
build/single-product-frontend.js	58.9 kB	0 B
build/single-product.js	14.2 kB	0 B
build/snackbar-notice-style-legacy.js	778 B	0 B
build/snackbar-notice-style.js	778 B	0 B
build/spinner-style-legacy.js	775 B	0 B
build/spinner-style.js	772 B	0 B
build/style-legacy-rtl.css	5.6 kB	0 B
build/style-legacy.css	5.61 kB	0 B
build/vendors-legacy.js	376 kB	0 B
build/vendors-style-legacy-rtl.css	1.65 kB	0 B
build/vendors-style-legacy.css	1.65 kB	0 B
build/vendors-style-legacy.js	105 B	0 B
build/vendors-style-rtl.css	1.65 kB	0 B
build/vendors-style.css	1.65 kB	0 B
build/vendors-style.js	105 B	0 B
build/vendors.js	473 kB	0 B
build/wc-blocks-data.js	7.08 kB	0 B
build/wc-blocks-middleware.js	932 B	0 B
build/wc-blocks-registry.js	1.78 kB	0 B
build/wc-payment-method-cheque.js	794 B	0 B
build/wc-payment-method-paypal.js	830 B	0 B
build/wc-payment-method-stripe.js	11.9 kB	0 B
build/wc-settings.js	2.14 kB	0 B
build/wc-shared-context.js	1.17 kB	0 B

_{compressed-size-action}