fix another race conditions in instance cypress test

spiffworkflow-frontend/cypress/support/commands.js

@@ -97,6 +97,7 @@ Cypress.Commands.add(
       cy.reload(true);
       cy.contains('Process Model:').should('exist');
       cy.contains(/Process Instance.*[kK]icked [oO]ff/).should('not.exist');
+      cy.contains('[data-qa=process-model-show-permissions-loaded]', 'true');
     }
   }
 );

spiffworkflow-frontend/src/routes/ProcessModelShow.tsx

@@ -680,6 +680,7 @@ export default function ProcessModelShow() {
             perPageOptions={[2, 5, 25]}
             showReports={false}
           />
+          <span data-qa="process-model-show-permissions-loaded">true</span>
         </Can>
       </>
     );