[FEATURES] In-Place Update Support for Runtime Workers

[cheyang]

What feature you'd like to add: Implement in-place upgrade workflow in the Runtime Controller. The workflow should include pulling new images, health probe verification, traffic switching, and safe termination of old runtime instances to minimize maintenance windows and reduce data service disruption.

Why is this feature needed: Supporting rolling/hot upgrades for runtime workers allows for service continuity and minimizes downtime or disruption in production environments. This is a key requirement for operator-friendly maintenance of data acceleration platforms.