Fix stacktrace in server tests

patches/server/0696-Add-advancement-display-API.patch

@@ -129,21 +129,28 @@ index c47cae84f3b6970247d78382f48ae8ddbc202b59..0a46eeefa7d704350321828166f0049d
  }
 diff --git a/src/test/java/io/papermc/paper/advancement/AdvancementFrameTest.java b/src/test/java/io/papermc/paper/advancement/AdvancementFrameTest.java
 new file mode 100644
-index 0000000000000000000000000000000000000000..4d043e0e43ef8bb75788e195f95b5a50a51a2a48
+index 0000000000000000000000000000000000000000..8888e6026d65ac74d6e7471763dfa18807216c3e
 --- /dev/null
 +++ b/src/test/java/io/papermc/paper/advancement/AdvancementFrameTest.java
-@@ -0,0 +1,24 @@
+@@ -0,0 +1,31 @@
 +package io.papermc.paper.advancement;
 +
++import com.mojang.logging.LogUtils;
 +import io.papermc.paper.adventure.PaperAdventure;
 +import net.kyori.adventure.text.format.TextColor;
 +import net.minecraft.advancements.FrameType;
 +import net.minecraft.network.chat.contents.TranslatableContents;
++import org.junit.Before;
 +import org.junit.Test;
 +
 +import static org.junit.Assert.assertEquals;
 +
 +public class AdvancementFrameTest {
++    @Before
++    public void before() {
++        // Work around weird classloading issue when initializing PaperAdventure
++        LogUtils.getLogger();
++    }
 +
 +    @Test
 +    public void test() {