Following discussion in 2471, we have agreed to re-visit the design around ways to support configs override during resource update. In general, we want the inject library to honor the config overrides annotations, even though the proxy injection process is skipped (most relevant to existing meshed workloads).

The approach currently used in #2471 causes the proxy configs to always be overridden, whether (auto or manual) proxy injection happens or not. It is uncertain if this will have unintended consequences on workloads that skipped the injection process. In addition, it also leads to different code path for supporting meshed and non-meshed workloads.

This task should commence immediately, after #2471 is merged.