fix(ui,richtext-*): path from context should always have precedence over path from props, even if it's an empty string (#6782)

packages/richtext-slate/src/field/RichText.tsx

@@ -106,7 +106,7 @@ const RichTextField: React.FC<
 
   const { formInitializing, initialValue, path, schemaPath, setValue, showError, value } = useField(
     {
-      path: pathFromContext || pathFromProps || name,
+      path: pathFromContext ?? pathFromProps ?? name,
       validate: memoizedValidate,
     },
   )