bugfix: In raft mode, the service domain name is used as xid. The xid is too long and an error occurs in XA mode.

[PeppaO]

• I have searched the issues of this repository and believe that this is not a duplicate.

Ⅰ. Issue Description

这个错误在跑XA测试用例中也出现过，所以手动执行XA start测试，发现就是字符太长导致的。

Ⅱ. Describe what happened

If there is an exception, please attach the exception trace:

Just paste your stack trace here!

Ⅲ. Describe what you expected to happen

Ⅳ. How to reproduce it (as minimally and precisely as possible)

1. xxx
2. xxx
3. xxx

Minimal yet complete reproducer code (or URL to code):

Ⅴ. Anything else we need to know?

Ⅵ. Environment:

• JDK version(e.g. java -version): 1.8
• Seata client/server version: 2.x
• Database version: mysql 8.0.27
• OS(e.g. uname -a):
• Others:

[slievrly]

@PeppaO Are you sure it's not a special character? This length limit is usually 132 characters, although it may vary depending on the version.