in my app extension, i am calling a 3rd party REST API to get some JSON in the language defined in "Accept-Language" request header.the shopify app proxy always changes its value to "en". as a workaround, i added another request header named "spotify...

+1why isn't theMetafieldDefinitionEditMutation accessible to developers?i really need exactly this feature to update values of a metafield when user stores api keys for my 3rd party rest API.any plans to make editing metafields public for us devs?