Document attachment_size_limit

Author: colinloretz

docs/interactions/receiving-and-responding.mdx

@@ -37,6 +37,7 @@ For [Message Components](#DOCS_INTERACTIONS_MESSAGE_COMPONENTS/) it includes ide
 | entitlements                   | array of [entitlement](#DOCS_RESOURCES_ENTITLEMENT/entitlement-object) objects                                                        | For [monetized apps](#DOCS_MONETIZATION_OVERVIEW), any entitlements for the invoking user, representing access to premium [SKUs](#DOCS_RESOURCES_SKU)                                                                                                                |
 | authorizing_integration_owners | dictionary with keys of [application integration types](#DOCS_RESOURCES_APPLICATION/application-object-application-integration-types) | Mapping of installation contexts that the interaction was authorized for to related user or guild IDs. See [Authorizing Integration Owners Object](#DOCS_INTERACTIONS_RECEIVING_AND_RESPONDING/interaction-object-authorizing-integration-owners-object) for details |
 | context?                       | [interaction context type](#DOCS_INTERACTIONS_RECEIVING_AND_RESPONDING/interaction-object-interaction-context-types)                  | Context where the interaction was triggered from                                                                                                                                                                                                                     |
+| attachment_size_limit          | integer                                                                                                                               | Attachment size limit in bytes                                                                                                                                                                                                                                 |
 
 \* This is always present on application command, message component, and modal submit interaction types. It is optional for future-proofing against new interaction types
 

docs/reference.mdx

@@ -397,7 +397,7 @@ https://cdn.discordapp.com/attachments/1012345678900020080/1234567891233211234/m
 ## Uploading Files
 
 > info
-> A file upload size limit applies to *all* files in a request (rather than each individual file). While the limit depends on the [**Boost Tier**](https://support.discord.com/hc/en-us/articles/360028038352-Server-Boosting-FAQ-#h_419c3bd5-addd-4989-b7cf-c7957ef92583) of a guild, it is `10 MiB` by default.
+> The file upload size limit applies to each file in a request. While the limit depends on the [**Boost Tier**](https://support.discord.com/hc/en-us/articles/360028038352-Server-Boosting-FAQ-#h_419c3bd5-addd-4989-b7cf-c7957ef92583) of a guild, it is `10 MiB` by default. The `attachment_size_limit` value is provided to your app [when working with interactions](#DOCS_INTERACTIONS_RECEIVING_AND_RESPONDING/interaction-object-interaction-structure). 
 
 Some endpoints support file attachments, indicated by the `files[n]` parameter. To add file(s), the standard `application/json` body must be replaced by a `multipart/form-data` body. The JSON message body can optionally be provided using the `payload_json` parameter.