Using EnvironmentVariableTarget.Machine to get the environment variables. (#1220)

EnvironmentVariableTarget.Machine 

The environment variable is stored or retrieved from the HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\Environment key in the Windows operating system registry. This value should be used on .NET implementations running on Windows systems only.

https://learn.microsoft.com/en-us/dotnet/api/system.environmentvariabletarget?view=net-6.0

Author: cuibty

src/DotNetCore.CAP/Internal/SnowflakeId.cs

@@ -87,7 +87,7 @@ public static SnowflakeId Default()
                     return _snowflakeId;
                 }
 
-                if (!long.TryParse(Environment.GetEnvironmentVariable("CAP_WORKERID", EnvironmentVariableTarget.Machine), out var workerId))
+                if (!long.TryParse(Environment.GetEnvironmentVariable("CAP_WORKERID"), out var workerId))
                 {
                     workerId = Util.GenerateWorkerId(MaxWorkerId);
                 }
@@ -188,4 +188,4 @@ private static long GenerateRandomWorkerId(int maxWorkerId)
             return new Random().Next(maxWorkerId + 1);
         }
     }
-}
+}