correctly look up react instance as __reactInternalInstance no longer…

… exists in react17 [run ci]

packages/driver/cypress/support/utils.ts

@@ -10,7 +10,7 @@ export const getCommandLogWithText = (command, type = 'method') => {
 }
 
 export const findReactInstance = function (dom) {
-  let key = _.keys(dom).find((key) => key.startsWith('__reactInternalInstance$')) as string
+  let key = _.keys(dom).find((key) => key.startsWith('__reactFiber')) as string
   let internalInstance = dom[key]
 
   if (internalInstance == null) return null