node crashes if run without internet connection

[alpsarica]

If core node is run without an active internet connection, instead of returning an error, node instantly crashes. Sometimes this issue also causes other nodes to crash.

[nacidai]

This should be addressed for the complete agent lifecycle:

• Connectivity is not guaranteed and failures are common
• Agents should have retry and recovery modes until they are successfully registered with the twin server
• Agent lifecycle states should be reliably updated with the twin server