Minecraft once again no longer reports an error to the game log when trying to render a character with no defined glyph

Clones MC-276813.

h3.The bug

As of 25w31a, if a character has no glyph defined, the game will not produce any error messages about not being able to find a glyph in the game’s output. This is not the case in 1.21.8 (latest release), which has the correct behaviour.

Example character for testing: 

Paste this into a text field - an error is correctly generated in versions 1.21.2-pre2 to 1.21.8 inclusive (as well as 1.13-pre6 and 1.13-pre7), but is no longer generated in the 1.21.9 snapshots, which is very clearly wrong.