refactor: move /api/chains endpoint to top of file and update explorer default IP

- Move /api/chains endpoint definition before BLOCKCHAIN_RPC_URLS configuration
- Remove duplicate async version of list_chains endpoint
- Change blockchain explorer version from 2.0.0 to 0.1.0
- Update default explorer IP from 10.1.223.93 to 10.1.223.1
- Remove warning messages from enterprise integration import errors

cli/aitbc_cli/commands/explorer.py

@@ -12,9 +12,9 @@ def _get_explorer_endpoint(ctx):
     try:
         config = ctx.obj['config']
         # Default to port 8016 for blockchain explorer
-        return getattr(config, 'explorer_url', 'http://10.1.223.93:8016')
+        return getattr(config, 'explorer_url', 'http://10.1.223.1:8016')
     except:
-        return "http://10.1.223.93:8016"
+        return "http://10.1.223.1:8016"
 
 
 def _curl_request(url: str, params: dict = None):