Certain stickers missing from search

[eth0fox]

Guidelines

• I have searched open and closed issues for duplicates
• I am submitting a bug report for existing functionality that does not work as intended
• This isn't a feature request or a discussion topic

Bug description

Certain stickers can be missing from the sticker search results.

This bug is consistently reproducible across all platforms (Desktop, Android & iOS), and appears to be an issue where the emoji string as defined in the sticker pack does not exactly match the emoji codepoint sequence as defined in Signal. (for example, it appears some of the sticker packs I have have the emoji defined without the variant selector character (U+FE0F) that forces colour presentation, whereas Signal's emoji definitions expect the FE0F to be present.)

1. Add the following sticker pack: https://signal.art/addstickers#pack_id=4ecdd78d860cb91aad6efb3dfbb326d8&pack_key=9cb0fb73874e68ee5b969e24585f1461557542418fb09011d4c91b64c2ef1bb4
2. Attempt to search for 'bed' in the stickers search, or enter '🛏' into the chat box.
3. Note that, how even though that pack contains a sticker for '🛏', it is missing from the search results, only if you enter '🛏' (which yes - is technically a different character) will you see the sticker suggestion.

Screenshots

No response

Device

OnePlus 6

Android version

Android 15

Signal version

8.19.2

Link to debug log

No response

[eth0fox]

See also: signalapp/Signal-Desktop#8010