fix "unknown field used in output permissions" message to "input" (#1863)

Context: https://app.slack.com/client/T7GHF0SM9/C08PAUZG6F6

aside: this error message (or maybe it's
`UnknownFieldInOutputPermissionsDefinition`) wasn't visible to the user.
I couldn't immediately see how ErrorVisibility ultimately gets set for
this type. Also looking at `set_span_attributes` it seems we don't have
a mechanism for surfacing non-internal errors that end up in an internal
span, is that what we want?

If it is, should I make `build_metadata` user-visible?

https://prod-gcp-grafana.hasura.io/d/a0aabf5f-9eb1-467b-8f5d-b7746a33c2a2/view-trace?orgId=1&var-traceId=1e444531ec996c040799e8ea9990de2b&from=now-6h&to=now&timezone=browser

V3_GIT_ORIGIN_REV_ID: 28d76ac421a60994ef439f879794cc5e82af0e1f

Author: jberryman

v3/crates/metadata-resolve/src/stages/type_permissions/error.rs

@@ -41,7 +41,7 @@ pub enum TypeInputPermissionError {
         "unsupported type in input type permissions definition: {type_name:}; only object types are supported"
     )]
     UnsupportedTypeInInputPermissions { type_name: CustomTypeName },
-    #[error("unknown field '{field_name:}' used in output permissions of type '{type_name:}'")]
+    #[error("unknown field '{field_name:}' used in input permissions of type '{type_name:}'")]
     UnknownFieldInInputPermissionsDefinition {
         field_name: FieldName,
         type_name: CustomTypeName,