Update RemoveProjectFromSecurityDashboard mutation to use new GlobalID

This changes the RemoveProjectFromSecurityDashbiard  mutation to use
the new `GlobalID` types for arguments, with the temporary
compatibility layer.

.rubocop_todo.yml

@@ -1274,7 +1274,6 @@ Graphql/IDType:
   Exclude:
     - 'ee/app/graphql/ee/mutations/issues/update.rb'
     - 'ee/app/graphql/ee/types/boards/board_issue_input_base_type.rb'
-    - 'ee/app/graphql/mutations/instance_security_dashboard/remove_project.rb'
     - 'ee/app/graphql/mutations/issues/set_epic.rb'
     - 'ee/app/graphql/mutations/iterations/update.rb'
     - 'ee/app/graphql/resolvers/iterations_resolver.rb'

doc/api/graphql/reference/gitlab_schema.graphql

@@ -16396,7 +16396,7 @@ input RemoveProjectFromSecurityDashboardInput {
   """
   ID of the project to remove from the Instance Security Dashboard
   """
-  id: ID!
+  id: ProjectID!
 }
 
 """

doc/api/graphql/reference/gitlab_schema.json

@@ -47191,7 +47191,7 @@
                 "name": null,
                 "ofType": {
                   "kind": "SCALAR",
-                  "name": "ID",
+                  "name": "ProjectID",
                   "ofType": null
                 }
               },

ee/app/graphql/mutations/instance_security_dashboard/remove_project.rb

@@ -7,7 +7,7 @@ module Mutations
 
       authorize :read_instance_security_dashboard
 
-      argument :id, GraphQL::ID_TYPE,
+      argument :id, Types::GlobalIDType[::Project],
                required: true,
                description: 'ID of the project to remove from the Instance Security Dashboard'
 
@@ -31,7 +31,9 @@ module Mutations
       def extract_project_id(gid)
         return unless gid.present?
 
-        GitlabSchema.parse_gid(gid, expected_type: ::Project).model_id
+        # TODO: remove explicit coercion once compatibility layer has been removed
+        # See: https://gitlab.com/gitlab-org/gitlab/-/issues/257883
+        Types::GlobalIDType[::Project].coerce_isolated_input(gid).model_id
       end
 
       def remove_project(project_id)

ee/changelogs/unreleased/268042-graphql-use-new-global-id-for-security-dashboard.yml

+---
+title: Update RemoveProjectFromSecurityDashboard mutation to use new Global IDs
+merge_request: 45500
+author:
+type: changed

ee/spec/graphql/mutations/instance_security_dashboard/remove_project_spec.rb

@@ -45,6 +45,17 @@ RSpec.describe Mutations::InstanceSecurityDashboard::RemoveProject do
           it { is_expected.to eq(errors: ['The project does not belong to your dashboard or you don\'t have permission to perform this action']) }
         end
 
+        context 'when provided project_id is not a Project' do
+          let(:project_id) { 'gid://gitlab/Vulnerability/1' }
+
+          it 'raises an error' do
+            expect { subject }.to raise_error(
+              GraphQL::CoercionError,
+              "\"#{project_id}\" does not represent an instance of Project"
+            )
+          end
+        end
+
         context 'when project is configured in security dashboard' do
           let(:project_id) { GitlabSchema.id_from_object(already_added_project) }