fix: make poll type optional on message response

[vishalnarkhede]

CLA

• [ ] I have signed the Stream CLA (required).
• [ ] Code changes are tested

Description of the changes, What, Why and How?

Changelog

-

[github-actions[bot]]

Size Change: +172 B (0%)

Total Size: 367 kB

Filename	Size	Change
dist/browser.es.js	79.2 kB	+36 B (0%)
dist/browser.full-bundle.min.js	48 kB	+18 B (0%)
dist/browser.js	80.3 kB	+38 B (0%)
dist/index.es.js	79.3 kB	+39 B (0%)
dist/index.js	80.3 kB	+41 B (0%)

_{compressed-size-action}