…#1578)

* fix: use not implemented error when REST transport is not supported

* lint

* revert local changes

* update error message and combine not implemented errors

* fix typo

* fix typo

* update ads templates

* formatting

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Fixes #1578 🦕

* add a new session and connect to test env

* I need to revert code change

* revert files for unncessary change

* fix more tests

* all test are clean

* fix more tests

* merge in the change

* revert the order changes, move single-modality tests back to PROD since they are in GA

* refactor multimodal tests out

* change the project name

* revert change

* remove unused bq client