[Feature]: metafieldNamespaces (or metafields) doesn't seem to be supported in toml webhook subscriptions #5987
Description
What area(s) will this request affect?
App
What type of change do you want to see?
New feature
Overview
Not sure why, but metafieldNamespaces and metafields props of webhook susbcriptions aren't available when setting up webhooks via the app toml.
Per this page, these options are missing: https://shopify.dev/docs/apps/build/cli-for-apps/app-configuration#webhooks
They're available via graphql admin API:
https://shopify.dev/docs/api/admin-graphql/latest/input-objects/WebhookSubscriptionInput
Weirdly, the Remix template does support metafieldNamespaces for it's registerWebhooks function, but it doesn't support filters - so neither toml or registerWebhooks can be used to create a webhook subscription with a filter on metafields.
Any plans to support these options in toml webhook subscription definitions?
Motivation
Need to create a webhook subscription that filters on a product metafield value in a public app. TOML is the easiest way to do this and I'd like to avoid manually creating these on install via graphql mutation (and then having to keep them up to date with manual jobs to update existing stores if things change).