* fork/bus_multi_dispatch:
sql: adds tests for InTransaction
bus: noop should still execute fn
removes unused code
bus: Dispatch now passes empty ctx if handler require it
bus: dont start transaction when creating session
bus: dont mix ctx/classic handlers
bus: DispatchCtx can now invoke any handler
refactoring: renamed AddCtxHandler to AddHandlerCtx PR #12203
refactoring: transaction manager PR #12203
fixes typo in code
check if admin exists or create one in one transaction
replace begin/end with wrapper function
bus: support multiple dispatch in one transaction