Compressed picture preview not shown while uploading

[SystemKeeper]

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Steps to reproduce

1. Post a picture

Expected behaviour

Preview should be visible in the temporary message while uploading

Actual behaviour

Note: No idea if that is due to webp or the compression in general, it does work correctly if original quality is used.

Talk app

Talk app version: 25 alpha1

Browser

Operating system: macOS 26.6.1

Browser name: Chrome 151

[SystemKeeper]

Also because of the height changes, this makes the chat jump and you don't stay at the bottom.

[Antreesy]

Fixed in #19004, not released