* fix: hide discussion xblock for openedx provider * fix: test cases * refactor: hide xblock is provider not legacy and add message in studio * fix: lint issue * refactor: update discussion block studio msg * fix: test discussion xblock query number
* Renames discussion_module to discussion_xblock * Moves common/lib/xmodule/xmodule_discussion to openedx/core/lib/xblock_builtin/xblock_discussion