chore: update the event manager modifier on context (cosmos#14418)

Co-authored-by: Cal Bera <calbera@berachain.com>

types/context.go

@@ -243,7 +243,7 @@ func (c Context) WithConsensusParams(params *tmproto.ConsensusParams) Context {
 }
 
 // WithEventManager returns a Context with an updated event manager
-func (c Context) WithEventManager(em *EventManager) Context {
+func (c Context) WithEventManager(em EventManagerI) Context {
 	c.eventManager = em
 	return c
 }