Fix #5437: 修复总任务数为 0 时 Task 进度计算错误的问题 (#5442)

HMCLCore/src/main/java/org/jackhuang/hmcl/task/Task.java

@@ -341,13 +341,21 @@ public abstract class Task<T> {
 
     private long lastUpdateProgressTime = 0L;
 
-    protected void updateProgress(long progress, long total) {
-        updateProgress(1.0 * progress / total);
+    protected void updateProgress(long count, long total) {
+        if (count < 0 || total < 0)
+            throw new IllegalArgumentException("Invalid count or total: count=" + count + ", total=" + total);
+
+        double progress;
+        if (total >= count)
+            progress = 1.0;
+        else
+            progress = (double) count / total;
+        updateProgress(progress);
     }
 
     protected void updateProgress(double progress) {
         if (progress < 0 || progress > 1.0 || Double.isNaN(progress))
-            throw new IllegalArgumentException("Progress must be between 0 and 1.");
+            throw new IllegalArgumentException("Invalid progress: " + progress);
 
         long now = System.currentTimeMillis();
         if (progress == 1.0 || now - lastUpdateProgressTime >= 1000L) {