完善一些高危风险的代码容错机制。

Assets/YooAsset/Runtime/ResourceManager/Provider/ProviderOperation.cs

@@ -269,6 +269,7 @@ namespace YooAsset
 
             if (_resManager.UseWeakReferenceHandle)
             {
+                // TODO 高危风险：如果移除弱引用失败，会导致资源永远无法释放。
                 if (RemoveWeakReference(handle) == false)
                     throw new System.Exception("Should never get here !");
             }
@@ -335,11 +336,18 @@ namespace YooAsset
                 List<WeakReference<HandleBase>> tempers = _weakReferences.ToList();
                 foreach (var weakRef in tempers)
                 {
-                    if (weakRef.TryGetTarget(out HandleBase target))
+                    if (weakRef.TryGetTarget(out HandleBase handle))
                     {
-                        if (target.IsValid)
+                        if (handle.IsValid)
                         {
-                            target.InvokeCallback();
+                            try
+                            {
+                                handle.InvokeCallback();
+                            }
+                            catch (Exception ex)
+                            {
+                                YooLogger.Error($"Exception in completion callback: {ex}");
+                            }
                         }
                     }
                 }
@@ -351,7 +359,14 @@ namespace YooAsset
                 {
                     if (handle.IsValid)
                     {
-                        handle.InvokeCallback();
+                        try
+                        {
+                            handle.InvokeCallback();
+                        }
+                        catch (Exception ex)
+                        {
+                            YooLogger.Error($"Exception in completion callback: {ex}");
+                        }
                     }
                 }
             }