Creating a typography from a text whose font is no longer installed
baked the broken font-id into a new asset. With several texts selected
there is no single style to capture either. The add-typography event
now does nothing in both cases, and the "Add typography" button in the
local library is disabled with a label that explains why.
The button lives in its own component so selection, shape and editor
changes re-render only the button, not the typography list, and shared
libraries do not subscribe to that state at all. The event and the
button read the editor data through the new `editor-text-options`, so
both see the same font for the wasm, v2 and v1 text editors.
AI-assisted-by: claude-opus-5-5
0389435ced