Apply suggestions from code review

Co-authored-by: Copilot <[email protected]>

Author: djhi

packages/ra-ui-materialui/src/detail/Tab.tsx

@@ -164,7 +164,7 @@ export interface TabProps extends Omit<MuiTabProps, 'children'> {
     className?: string;
     divider?: ReactNode;
     icon?: ReactElement;
-    label: string | ReactNode;
+    label: ReactNode;
     path?: string;
     record?: RaRecord;
     spacing?: ResponsiveStyleValue<number | string>;

packages/ra-ui-materialui/src/field/ReferenceOneField.tsx

@@ -106,7 +106,7 @@ export interface ReferenceOneFieldProps<
     /**
      * @deprecated Use the empty prop instead
      */
-    emptyText?: string | ReactNode;
+    emptyText?: ReactNode;
     empty?: ReactNode;
     offline?: ReactNode;
     queryOptions?: Omit<