fix(core/errors): change base class of custom exceptions to ValueError (#11955)

Signed-off-by: -LAN- <laipz8200@outlook.com>

api/core/errors/error.py

 from typing import Optional
 
 
-class LLMError(Exception):
+class LLMError(ValueError):
     """Base class for all LLM exceptions."""
 
     description: Optional[str] = None
     description = "Bad Request"
 
 
-class ProviderTokenNotInitError(Exception):
+class ProviderTokenNotInitError(ValueError):
     """
     Custom exception raised when the provider token is not initialized.
     """
         self.description = args[0] if args else self.description
 
 
-class QuotaExceededError(Exception):
+class QuotaExceededError(ValueError):
     """
     Custom exception raised when the quota for a provider has been exceeded.
     """
     description = "Quota Exceeded"
 
 
-class AppInvokeQuotaExceededError(Exception):
+class AppInvokeQuotaExceededError(ValueError):
     """
     Custom exception raised when the quota for an app has been exceeded.
     """
     description = "App Invoke Quota Exceeded"
 
 
-class ModelCurrentlyNotSupportError(Exception):
+class ModelCurrentlyNotSupportError(ValueError):
     """
     Custom exception raised when the model not support
     """
     description = "Model Currently Not Support"
 
 
-class InvokeRateLimitError(Exception):
+class InvokeRateLimitError(ValueError):
     """Raised when the Invoke returns rate limit error."""
 
     description = "Rate Limit Error"