Clean workflow run stoppage flag (#16950)

Flag has never been removed. Feature allows to stop a running workflow
run.

packages/twenty-server/src/engine/twenty-orm/entity-manager/workspace-entity-manager.spec.ts

@@ -219,7 +219,6 @@ describe('WorkspaceEntityManager', () => {
         IS_RECORD_PAGE_LAYOUT_ENABLED: false,
         IS_PUBLIC_DOMAIN_ENABLED: false,
         IS_EMAILING_DOMAIN_ENABLED: false,
-        IS_WORKFLOW_RUN_STOPPAGE_ENABLED: false,
         IS_DASHBOARD_V2_ENABLED: false,
         IS_TIMELINE_ACTIVITY_MIGRATED: false,
         IS_GLOBAL_WORKSPACE_DATASOURCE_ENABLED: false,
@@ -248,7 +247,6 @@ describe('WorkspaceEntityManager', () => {
         IS_RECORD_PAGE_LAYOUT_ENABLED: false,
         IS_PUBLIC_DOMAIN_ENABLED: false,
         IS_EMAILING_DOMAIN_ENABLED: false,
-        IS_WORKFLOW_RUN_STOPPAGE_ENABLED: false,
         IS_DASHBOARD_V2_ENABLED: false,
         IS_ROW_LEVEL_PERMISSION_PREDICATES_ENABLED: false,
       },