chore(widget): drop unused eslint-disable in theme types

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: Paul Mulligan

widget/src/theme/types.ts

@@ -68,5 +68,4 @@ export type ClaudiusThemeInput =
   | "auto"
   | BuiltinThemeName
   | ClaudiusTheme
-  // eslint-disable-next-line @typescript-eslint/no-empty-object-type
   | (string & {});