fix: send batch commands to cmds channel instead of executing them in event loop (#1473)

We shouldn't execute commands in the event loop ourselves. Instead, we
should send them to the commands channel where the command handlers will
take care of executing them.

Fixes: f5da8d0 (fix: handle nested SequenceMsg in event loop and use sync.WaitGroup f… (#1463))
Supersedes: #1485

Author: aymanbagabas

tea.go

@@ -475,7 +475,11 @@ func (p *Program) eventLoop(model Model, cmds chan Cmd) (Model, error) {
 					if cmd == nil {
 						continue
 					}
-					go p.Send(cmd())
+					select {
+					case <-p.ctx.Done():
+						return model, nil
+					case cmds <- cmd:
+					}
 				}
 				continue