LibVT: Make Terminal::clear_in_line() keep line attributes

Author: https://github.com/demostanis
Commit: https://github.com/SerenityOS/serenity/commit/6880359064
Pull-request: https://github.com/SerenityOS/serenity/pull/15195
Reviewed-by: https://github.com/ADKaster
Reviewed-by: https://github.com/AtkinsSJ
Reviewed-by: https://github.com/Xexxa ✅
Reviewed-by: https://github.com/alimpfard
Reviewed-by: https://github.com/gmta ✅
Reviewed-by: https://github.com/timschumi ✅

Userland/Libraries/LibVT/Terminal.cpp

@@ -856,7 +856,7 @@ void Terminal::put_character_at(unsigned row, unsigned column, u32 code_point)
 void Terminal::clear_in_line(u16 row, u16 first_column, u16 last_column)
 {
     VERIFY(row < rows());
-    active_buffer()[row].clear_range(first_column, last_column);
+    active_buffer()[row].clear_range(first_column, last_column, m_current_state.attribute);
 }
 #endif