feat: emit cached context events (backport cosmos#13063) (cosmos#13702)

CHANGELOG.md

@@ -51,6 +51,10 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (x/auth/tx) [#12474](https://github.com/cosmos/cosmos-sdk/pull/12474) Remove condition in GetTxsEvent that disallowed multiple equal signs, which would break event queries with base64 strings (i.e. query by signature).
 * (store) [#13530](https://github.com/cosmos/cosmos-sdk/pull/13530) Fix app-hash mismatch if upgrade migration commit is interrupted.
 
+## API Breaking Changes
+
+* (context) [#13063](https://github.com/cosmos/cosmos-sdk/pull/13063) Update `Context#CacheContext` to automatically emit all events on the parent context's `EventManager`.
+
 ## [v0.46.3](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.46.3) - 2022-10-20
 
 ATTENTION:

x/group/keeper/msg_server.go

@@ -864,19 +864,13 @@ func (k Keeper) Exec(ctx context.Context, msg *group.MsgExec) (*group.MsgExecRes
 			return nil, err
 		}
 
-		results, err := k.doExecuteMsgs(cacheCtx, k.router, proposal, addr)
-		if err != nil {
+		if _, err := k.doExecuteMsgs(cacheCtx, k.router, proposal, addr); err != nil {
 			proposal.ExecutorResult = group.PROPOSAL_EXECUTOR_RESULT_FAILURE
 			logs = fmt.Sprintf("proposal execution failed on proposal %d, because of error %s", proposal.Id, err.Error())
 			k.Logger.Info("proposal execution failed", "cause", err, "proposalID", proposal.Id)
 		} else {
 			proposal.ExecutorResult = group.PROPOSAL_EXECUTOR_RESULT_SUCCESS
 			flush()
-
-			for _, res := range results {
-				// NOTE: The sdk msg handler creates a new EventManager, so events must be correctly propagated back to the current context
-				ctx.EventManager().EmitEvents(res.GetEvents())
-			}
 		}
 	}