Grid: Fix layout for very small items

Until this commit Items with a size of 1 could be rounded to
bounds with a size of 0 or 2 due to floating point errors, leading
to slightly too large or disappearing items. The new approach
preserves the size of items.

modules/juce_gui_basics/layout/juce_Grid.cpp

@@ -1047,7 +1047,7 @@ void Grid::performLayout (Rectangle<int> targetArea)
                                 + targetArea.toFloat().getPosition();
 
         if (auto* c = item->associatedComponent)
-            c->setBounds (item->currentBounds.toNearestIntEdges());
+            c->setBounds (item->currentBounds.getSmallestIntegerContainer());
     }
 }