LibWeb: Move rows positioning in separate function in TFC

Author: https://github.com/kalenikaliaksandr
Commit: ea4937a457
Pull-request: https://github.com/SerenityOS/serenity/pull/16899
Reviewed-by: https://github.com/awesomekling

Userland/Libraries/LibWeb/Layout/TableFormattingContext.h

@@ -26,6 +26,7 @@ private:
     void distribute_width_to_columns();
     void determine_intrisic_size_of_table_container(AvailableSpace const& available_space);
     void calculate_row_heights();
+    void position_row_boxes();
 
     CSSPixels m_automatic_content_height { 0 };