fix: remove restriction on 'v' in astrbot_version specification format

Author: Soulter

astrbot/core/star/star_manager.py

@@ -6,6 +6,7 @@
 import json
 import logging
 import os
+import re
 import sys
 import traceback
 from types import ModuleType
@@ -304,12 +305,6 @@ def _validate_astrbot_version_specifier(
         if not normalized_spec:
             return True, None
 
-        if "v" in normalized_spec.lower():
-            return (
-                False,
-                "astrbot_version 不允许包含 v/V，请使用如 >=4.16,<5 的格式。",
-            )
-
         try:
             specifier = SpecifierSet(normalized_spec)
         except InvalidSpecifier: