代码清理与修复 UI 卡顿资源占用过高的问题 (#1849)

* Lazy initialization of Swing

* Load ISRG Root X1 certificate only on Java 8

* Replace JOptionPane with JavaFX Alert

* Avoid using java.awt.Desktop

* Rewrite TexturesLoader

* Optimization SelfDependencyPatcher

* fix typo

* close #968: Use computeIfAbsent to ensure thread safety

* Optimization GameVersion::minecraftVersion

* code cleanup

* Set the initial capacity of readFullyWithoutClosing

* code cleanup

* Mark inner classes as static if possible

* Cache version icon

* Code cleanup

* Fix ListView scrolling performance issues

* DatapackListPage::items

* Replace OutputStream with FileChannel::write

HMCL/src/main/java/org/jackhuang/hmcl/Launcher.java

@@ -40,7 +40,6 @@ import org.jackhuang.hmcl.util.platform.Architecture;
 import org.jackhuang.hmcl.util.platform.CommandBuilder;
 import org.jackhuang.hmcl.util.platform.OperatingSystem;
 
-import java.awt.*;
 import java.io.IOException;
 import java.lang.management.ManagementFactory;
 import java.net.CookieHandler;
@@ -131,7 +130,8 @@ public final class Launcher extends Application {
                 Platform.setImplicitExit(false);
                 Controllers.initialize(primaryStage);
 
-                initIcon();
+                if (OperatingSystem.CURRENT_OS == OperatingSystem.OSX)
+                    initIcon();
 
                 UpdateChecker.init();
 
@@ -149,8 +149,7 @@ public final class Launcher extends Application {
     }
 
     private void initIcon() {
-        Toolkit toolkit = Toolkit.getDefaultToolkit();
-        Image image = toolkit.getImage(Launcher.class.getResource("/assets/img/icon.png"));
+        java.awt.Image image = java.awt.Toolkit.getDefaultToolkit().getImage(Launcher.class.getResource("/assets/img/icon.png"));
         AwtUtils.setAppleIcon(image);
     }