feat(api): Implement EventManager error logging and add coverage (#29204)

- Ensure `EventManager._notify_layers` logs exceptions instead of silently swallowing them 
  so GraphEngine layer failures surface for debugging
- Introduce unit tests to assert the logger captures the runtime error when collecting events
- Enable the `S110` lint rule to catch `try-except-pass` patterns
- Add proper error logging for existing `try-except-pass` blocks.

api/core/entities/provider_configuration.py

@@ -253,7 +253,7 @@ class ProviderConfiguration(BaseModel):
                 try:
                     credentials[key] = encrypter.decrypt_token(tenant_id=self.tenant_id, token=credentials[key])
                 except Exception:
-                    pass
+                    logger.exception("Failed to decrypt credential secret variable %s", key)
 
         return self.obfuscated_credentials(
             credentials=credentials,
@@ -765,7 +765,7 @@ class ProviderConfiguration(BaseModel):
                 try:
                     credentials[key] = encrypter.decrypt_token(tenant_id=self.tenant_id, token=credentials[key])
                 except Exception:
-                    pass
+                    logger.exception("Failed to decrypt model credential secret variable %s", key)
 
         current_credential_id = credential_record.id
         current_credential_name = credential_record.credential_name