fix: thread reply preview not added to channel state

[szuperaz]

CLA

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

Description of the changes, What, Why and How?

UI SDKs (for example Angular and React) create a message preview before sending a message request to the API and display those message previews in the message list while the message is being sent. There was a bug in the channel state where thread reply preview messages weren't added to the channel state. This was due to the recent jump to message functionality.

Changelog

• fix: thread reply preview not added to channel state

[github-actions]

Size Change: +350 B (0%)

Total Size: 299 kB

Filename	Size	Change
dist/browser.es.js	65.4 kB	+88 B (0%)
dist/browser.full-bundle.min.js	35.7 kB	-2 B (0%)
dist/browser.js	66.1 kB	+87 B (0%)
dist/index.es.js	65.5 kB	+93 B (0%)
dist/index.js	66.2 kB	+84 B (0%)

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