feat: update message pending tasks

[isekovanic]

CLA

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

Description of the changes, What, Why and How?

This PR introduces support for adding message updates as a pending task whenever we are offline and persisting it. It goes hand in hand with an extended pending task API through updatePendingTask (living in the UI SDK implementation currently).

The flow is as follows:

• If we're online, we simply update the message
• If we're offline and the message is an already successful one, we simply queue up the pending task
• If we're offline and the message is a failed one (for example, we send a message while offline and then immediately edit it), we update the send-message pending task with the new data
  • When this happens, we make sure to not change the message_text_changed_at property so that the newly sent message does not appear as edited

This comes with a couple of caveats:

• Attachments are out of scope, since currently our async uploads feature still lives on the UI SDK (once that gets moved to the LLC we can support that too)
  • Offline updates containing attachments will simply be skipped
• The optimistic updates still live in the UI SDK, their move towards the LLC will come in the next 2 quarters gradually

Changelog

[github-actions]

Size Change: +2.71 kB (+0.74%)

Total Size: 369 kB

📦 View Changed

Filename	Size	Change
dist/cjs/index.browser.js	123 kB	+913 B (+0.75%)
dist/cjs/index.node.js	124 kB	+901 B (+0.73%)
dist/esm/index.mjs	122 kB	+901 B (+0.74%)

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[stream-ci-bot]

🎉 This PR is included in version 9.40.0 🎉

The release is available on:

• GitHub release
• npm package (@latest dist-tag)

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