Function feature_plain_name 

pub fn feature_plain_name(feature_type: &str) -> String

The same display name WITHOUT the leading glyph — the schema longName, else the type itself.

For the one kind of caller that draws the icon as ARTWORK rather than as a character: the history tree gives the icon its own column (brep_app::panels::tree::TreeRow::glyph), so its label must not carry the glyph a second time. Everything that shows a feature name as plain text keeps reading feature_long_name, which is still where the icon is prepended.