Eeschema, plot schematic: fix incorrect rotation of symbol text in textboxes.

Happened with rotated symbols.
From master branch
Fixes #16027
https://gitlab.com/kicad/code/kicad/-/issues/16027

eeschema/lib_textbox.cpp

@@ -465,7 +465,7 @@ void LIB_TEXTBOX::Plot( PLOTTER* aPlotter, bool aBackground, const VECTOR2I& aOf
 
     text.GetLinePositions( positions, (int) strings_list.Count() );
 
-    TEXT_ATTRIBUTES attrs = GetAttributes();
+    TEXT_ATTRIBUTES attrs = text.GetAttributes();
     attrs.m_StrokeWidth = penWidth;
     attrs.m_Multiline = false;