fix(stripe): encode Stripe wire shapes

[agcty]

What

Fixes Stripe wire-shape handling in the generated Distilled Stripe SDK so callers do not need resource-local raw HTTP fallbacks.

• Serializes GET operation body fields as Stripe query params using bracket notation for arrays and nested objects.
• Preserves typed GetPrices support for created range filters and repeated lookup_keys.
• Allows Stripe's empty-string clear value for PostProductsId.shippable.
• Updates the OpenAPI 3 generator to preserve parameter schemas instead of collapsing non-enum query params to primitive strings.

Why

alchemy-run/alchemy-effect#693 needs Stripe product clears, lookup-key/range price listing, and delete responses to work through the Distilled operations directly.

Verification

• bun --filter '@distilled.cloud/stripe' test -- request-options.test.ts
• bun --filter '@distilled.cloud/stripe' typecheck
• bun --filter '@distilled.cloud/stripe' build
• bun --filter '@distilled.cloud/core' typecheck
• bun --filter '@distilled.cloud/core' lint
• bun --filter '@distilled.cloud/stripe' lint
• bun --filter '@distilled.cloud/core' check
• bun --filter '@distilled.cloud/stripe' check