test: add missing tests for toolbox pre and pos slots in RoomHeader#39480

sahillllllllll-bit wants to merge 1 commit intoRocketChat:developRocketChat/Rocket.Chat:developfrom

sahillllllllll-bit:test-roomheader-toolbox-pre-possahillllllllll-bit/Rocket.Chat:test-roomheader-toolbox-pre-posCopy head branch name to clipboard