Load dashcard metadata in parallel with the query (#42953)

* Split card data and query

* Split card data and query

* Split card data and query

* Fix loading state

* Postpone card check

* Postpone card check

* Postpone field check

* Postpone field check

* Postpone field check

* Postpone field check

* Postpone field check

* Add await

* Add await

* Add await

* Add await

* Fix tests

* Fix data loading

* Fix data loading

* Fix data loading

* Fix data loading

* Revert "Fix data loading"

This reverts commit 2b782b99368f6f8fcdbe0cfa086c8c693d9d3f86.

* Fix data loading

* Fix test

* Fix test

* Fix embedding

* Fix xrays

* Fix xrays