feat: improve caption display for portrait images

[PolynomialDivision]

If a portrait image has a caption, the text gets compressed to the width of the image which often looks bad. Expand to full bubble width and crop the image as a tradeoff. User needs to tap to see the full image.

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Pull Request has been tested on:

• Android
• iOS
• Browser (Chromium based)
• Browser (Firefox based)
• Browser (WebKit based)
• Desktop Linux
• Desktop Windows
• Desktop macOS

[krille-chan]

If a portrait image has a caption, the text gets compressed to the width of the image which often looks bad. Expand to full bubble width and crop the image as a tradeoff. User needs to tap to see the full image.

But for a picture with very small width and large height this would look super bad and pixelated, right?

[PolynomialDivision]

But for a picture with very small width and large height this would look super bad and pixelated, right?

I think it is not worse than before. A user needs to click on the image than... I think this is fine.