feat(telegram): add sendPoll support (#16193) (#16209)

Merged via /review-pr -> /prepare-pr -> /merge-pr.

Prepared head SHA: b58492cfed
Co-authored-by: robbyczgw-cla <239660374+robbyczgw-cla@users.noreply.github.com>
Co-authored-by: steipete <58493+steipete@users.noreply.github.com>
Reviewed-by: @steipete

src/polls.test.ts

@@ -13,6 +13,7 @@ describe("polls", () => {
       question: "Lunch?",
       options: ["Pizza", "Sushi"],
       maxSelections: 2,
+      durationSeconds: undefined,
       durationHours: undefined,
     });
   });