IDEA-231627: Async stack trace separator is too small in presentation mode

GitOrigin-RevId: 5505675d5a569cbea30595be03f7dc4b3372bfe9

platform/platform-api/src/com/intellij/ui/GroupedElementsRenderer.java

@@ -12,6 +12,8 @@ import javax.swing.border.EmptyBorder;
 import javax.swing.tree.TreeCellRenderer;
 import java.awt.*;
 
+import static com.intellij.ui.RelativeFont.BOLD;
+
 public abstract class GroupedElementsRenderer {
   protected SeparatorWithText mySeparatorComponent = createSeparator();
 
@@ -70,6 +72,10 @@ public abstract class GroupedElementsRenderer {
     aComponent.setForeground(selected ? getSelectionForeground() : getForeground());
   }
 
+  protected void setSeparatorFont(Font font) {
+    mySeparatorComponent.setFont(BOLD.derive(font));
+  }
+
   protected abstract Color getSelectionBackground();
 
   protected abstract Color getSelectionForeground();

platform/platform-impl/src/com/intellij/ide/plugins/PluginManagerConfigurable.java

@@ -266,7 +266,6 @@ public class PluginManagerConfigurable
             return new SeparatorWithText() {
               {
                 setTextForeground(JBColor.BLACK);
-                setFont(UIUtil.getLabelFont());
                 setCaptionCentered(false);
               }
 
@@ -276,6 +275,11 @@ public class PluginManagerConfigurable
             };
           }
 
+          @Override
+          protected void setSeparatorFont(Font font) {
+            mySeparatorComponent.setFont(font);
+          }
+
           @Override
           protected Border getDefaultItemComponentBorder() {
             return new EmptyBorder(JBInsets.create(UIUtil.getListCellVPadding(), 15));

platform/platform-impl/src/com/intellij/ui/popup/list/GroupedItemsListRenderer.java

@@ -44,6 +44,7 @@ public class GroupedItemsListRenderer<E> extends GroupedElementsRenderer.List im
     String caption = myDescriptor.getCaptionAboveOf(value);
     boolean hasSeparator = myDescriptor.hasSeparatorAboveOf(value);
     if (index == 0 && StringUtil.isEmptyOrSpaces(caption)) hasSeparator = false;
+    if (hasSeparator) setSeparatorFont(list.getFont());
 
     Icon icon = isSelected ? myDescriptor.getSelectedIconFor(value) : myDescriptor.getIconFor(value);
     final JComponent result = configureComponent(myDescriptor.getTextFor(value), myDescriptor.getTooltipFor(value),