Closes#18027
Unlike macOS, not all glyphs in color fonts are color glyphs, such as
`🇩🇪` in `Segoe UI Emoji`. As a result, attempting to retrieve color
information for these glyphs can cause an error, preventing the glyph
from being rendered.
This PR addresses the issue by setting the `is_emoji` variable to
`false` for non-color glyphs within color fonts.
Release Notes:
- N/A
Junkui Zhang
ac0d5d3152