fix(go): add permission handler to abort test and regenerate snapshot

The abort test creates a session with nil config and waits for
tool.execution_start. After the default-deny fix (requestPermission=true
always sent), tool calls are denied before execution, so the event never
fires and the test times out.

Add OnPermissionRequest: PermissionHandler.ApproveAll so the shell tool
can start executing, then be interrupted by the abort.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: SteveSandersonMS

go/internal/e2e/session_test.go

@@ -463,7 +463,9 @@ func TestSession(t *testing.T) {
 	t.Run("should abort a session", func(t *testing.T) {
 		ctx.ConfigureForTest(t)
 
-		session, err := client.CreateSession(t.Context(), nil)
+		session, err := client.CreateSession(t.Context(), &copilot.SessionConfig{
+			OnPermissionRequest: copilot.PermissionHandler.ApproveAll,
+		})
 		if err != nil {
 			t.Fatalf("Failed to create session: %v", err)
 		}