Makes GraphQL mutation follow naming convention

Modifies WorkItems::CreateFormTask to follow GraphQL naming convention.

Fixes https://gitlab.com/gitlab-org/gitlab/-/issues/353165

app/graphql/mutations/work_items/create_from_task.rb

@@ -3,13 +3,13 @@
 module Mutations
   module WorkItems
     class CreateFromTask < BaseMutation
+      graphql_name 'WorkItemCreateFromTask'
+
       include Mutations::SpamProtection
 
       description "Creates a work item from a task in another work item's description." \
                   " Available only when feature flag `work_items` is enabled. This feature is experimental and is subject to change without notice."
 
-      graphql_name 'WorkItemCreateFromTask'
-
       authorize :update_work_item
 
       argument :id, ::Types::GlobalIDType[::WorkItem],