perf : 异常处理替换为YOO的异常类

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Elements/RecordFileElement.cs

@@ -37,9 +37,9 @@ namespace YooAsset
                     return false;
                 }
             }
-            catch (Exception e)
+            catch (Exception ex)
             {
-                YooLogger.Error($"Failed to delete cache file ! {e.Message}");
+                YooLogger.Error($"Failed to delete cache file ! {ex.Message}");
                 return false;
             }
         }

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Elements/VerifyFileElement.cs

@@ -33,9 +33,9 @@ namespace YooAsset
             {
                 Directory.Delete(FileRootPath, true);
             }
-            catch (System.Exception e)
+            catch (System.Exception ex)
             {
-                YooLogger.Warning($"Failed to delete cache bundle folder : {e}");
+                YooLogger.Warning($"Failed to delete cache bundle folder : {ex}");
             }
         }
     }