Flyte enables production-grade orchestration for machine learning workflows and data processing created to accelerate local workflows to production.

Flyte

<https://github.com/flyteorg/flyte/pull/6640|#6640 Remove use of deprecated pod phase>
Pull request opened by <https://github.com/Sovietaced|Sovietaced>
## Why are the changes needed?

`v1.PodUnknown` has been deprecated and unused since 2015. My IDE has warning messages and I figured it should be safe to just cleanup this part of the code.

See: <https://pkg.go.dev/k8s.io/api/core/v1@v0.28.2#PodUnknown|https://pkg.go.dev/k8s.io/api/core/v1@v0.28.2#PodUnknown>

## What changes were proposed in this pull request?

Removes all references to `v1.PodUnknown` pod phase.

## How was this patch tested?

Unit tests

### Setup process

### Screenshots

## Check all the applicable boxes 

• I updated the documentation accordingly.
• All new and existing tests passed.
• All commits are signed-off.

## Related PRs

## Docs link

<https://bito.ai#summarystart|> 

### Summary by Bito

This pull request removes all references to the deprecated pod phase `v1.PodUnknown`, which has been unused since 2015. The updates across multiple files enhance code cleanliness and maintain functionality. Unit tests were added to ensure existing features remain intact.
<https://github.com/flyteorg/flyte|flyteorg/flyte>

<https://github.com/flyteorg/flyte/pull/6640|#6640 Remove use of deprecated pod phase>
Pull request ready for review by <https://github.com/Sovietaced|Sovietaced>
<https://github.com/flyteorg/flyte|flyteorg/flyte>

<https://github.com/flyteorg/flyte/pull/6640|#6640 Remove use of deprecated pod phase>
Pull request merged by <https://github.com/Sovietaced|Sovietaced>
<https://github.com/flyteorg/flyte|flyteorg/flyte>