fix: set default Squid Router throttle to 1000 (#2386)

.env.example

@@ -366,7 +366,7 @@ SQUID_SDK_URL=https://apiplus.squidrouter.com # Default: https://apiplus.squidro
 SQUID_INTEGRATOR_ID=                          # get integrator id through https://docs.squidrouter.com/
 SQUID_EVM_ADDRESS=
 SQUID_EVM_PRIVATE_KEY=
-SQUID_API_THROTTLE_INTERVAL= # Default: 0; Used to throttle API calls to avoid rate limiting (in ms)
+SQUID_API_THROTTLE_INTERVAL=1000 # Default: 1000; Used to throttle API calls to avoid rate limiting (in ms)
 
 # TEE Configuration
 # TEE_MODE options: