[6.x] Bring back the catalog pricing rules table on the variant price field

[nfourtythree]

Description

In 5.x the price field showed which catalog pricing rules applied to a variant. That got lost when the field moved to the new UI system, so this brings it back.

The price field now has a collapsible "Pricing rules" section with a table of the rules currently applied to the variant, cheapest first. Each row shows the rule's effect and resulting price. Badges mark the rule a customer without a customer-specific rule pays ("Lowest for everyone") and rules limited to certain customers ("Specific customers").

Rule names and "Add catalog price" open in a wide slideout. The table refreshes after a save, and keeps checking while a pricing job is running. Editing the price shows a note that prices will update once it's saved. Links and the add button only show for users who can manage pricing rules. Nothing shows for a variant that hasn't been saved yet.

Variants also open in a wider slideout now. This needs craftcms/cms#19947 for slideoutWidth(), so merge that first.

craftcms/cms#19956 and craftcms/cms#19957 add slideout and refresh options to admin tables, and double-click to open a row. Once they're merged I'll update this PR to use them in place of the custom click handling in CatalogPricesNode.

Other changes:

• Fixed catalog price generation on Postgres. Base prices came back as strings, and the base price insert used unquoted camelCase column names.
• Fixed saving a pricing rule with a customer condition, which failed because the rule/user rows had no dateCreated or dateUpdated.
• Removed the old Twig/jQuery version of the price field, its asset bundle, Purchasable::catalogPricingRulesTableByPurchasableId(), and the unused commerce/catalog-pricing/get-catalog-prices action.
• Moved the rule effect wording into CatalogPricingRule::getEffectLabel() so the rules index and the new table share it.