Part: Remove needPickedList mat override to prevent rendering artifact

The `needPickedList` check in `SoBrepFaceSet` was triggering
unnecessary material override processing that caused face clipping
artifacts when the "Picked object list" option was enabled in Selection
View. This check has been removed as the picked list functionality works
independently of the rendering path.

(cherry picked from commit c66aa58a60)

src/Mod/Part/Gui/SoBrepFaceSet.cpp

@@ -854,20 +854,12 @@ bool SoBrepFaceSet::overrideMaterialBinding(SoGLRenderAction* action, SelContext
 
     if ((mb == SoMaterialBindingElement::OVERALL
          || (mb == SoMaterialBindingElement::PER_PART && diffuse_size >= partIndex.getNum()))
-        && ((ctx && Gui::Selection().needPickedList()) || trans0 != 0.0
-            || (ctx2 && !ctx2->colors.empty()))) {
+        && (trans0 != 0.0 || (ctx2 && !ctx2->colors.empty()))) {
         state->push();
 
         packedColors.clear();
 
-        if (ctx && Gui::Selection().needPickedList()) {
-            hasTransparency = true;
-            trans_size = 1;
-            if (ctx2) {
-                ctx2->trans0 = trans0;
-            }
-        }
-        else if (ctx2) {
+        if (ctx2) {
             ctx2->trans0 = 0.0;
         }