* Fix e2e tests which use the insertBlock function
* Move more instances of insertBlock to insertWCBlock
* Ensure block inserter is open before searching for a block
* Get rid of openWidgetsEditorBlockInserter
* Rename insertWCBlocks to insertBlockDontWaitForInsertClose
* Fix e2e tests of the Product Details block
* Migrate to insertBlockDontWaitForInsertClose instead of insertBlock
* Go to single product template
* Fix Product Details classname and slug in tests
* Replace usage of 'foo' variable name
* Fix typo in 'can not be inserted in a post' test
Albert Juhé Lluveras