Don't base button nudge on button width

That would mess up button placement if we play with
width.

This change also changes button spacing. This is fine,
because we're about to change it in the next commit.

src/gui/panels/ValentineTopRowPanel.cpp

@@ -59,7 +59,7 @@ void TopRowPanel::resized()
     const auto buttonWidth = juce::roundToInt (sliders.getWidth() * .033f);
     const auto adjustedComponentWidth = sliders.getWidth() - (buttonWidth * 2.0f);
     const auto sliderInitialWidth = juce::roundToInt (adjustedComponentWidth / 3.0f);
-    const auto buttonNudge = juce::roundToInt (buttonWidth / 5.0f);
+    const auto buttonNudge = juce::roundToInt (sliderInitialWidth / 12.0f);
 
     const auto setButtonAndSliderBounds = [&] (auto& button, auto& slider) {
         const auto initialButtonX = sliders.getX();