Stage 17 round 5: fix robot-pool test for the new friend-request policy

TestRobotPoolProvisionsRobotAccounts asserted robots block friend requests; they no
longer do (a request stays pending and expires like a human ignore). Assert chat is
blocked and friend requests are open. (Unblocks the integration job / contour deploy.)

backend/internal/inttest/robot_test.go

@@ -96,8 +96,11 @@ func TestRobotPoolProvisionsRobotAccounts(t *testing.T) {
 	if err != nil {
 		t.Fatalf("get robot account: %v", err)
 	}
-	if acc.DisplayName == "" || !acc.BlockChat || !acc.BlockFriendRequests {
-		t.Errorf("robot profile not set: name=%q chat=%v friends=%v", acc.DisplayName, acc.BlockChat, acc.BlockFriendRequests)
+	// A robot blocks chat but NOT friend requests: a request to a robot stays pending and
+	// expires, mirroring a human who ignores it (Stage 17).
+	if acc.DisplayName == "" || !acc.BlockChat || acc.BlockFriendRequests {
+		t.Errorf("robot profile wrong: name=%q chat-blocked=%v friends-blocked=%v (want chat blocked, friends open)",
+			acc.DisplayName, acc.BlockChat, acc.BlockFriendRequests)
 	}
 }