KEP-1287: Keep in-place pod resize KEP alpha/implementable for v1.30

[Jeffwan]

• One-line PR description: Keep KEP up-to-date. There're few issues need to be resolved in v1.30

• Issue link: In-Place Update of Pod Resources #1287

• Other comments:

[Jeffwan]

/cc @vinaykul @kubernetes/sig-node-leads

There're few issues not resolved in v1.29 yet. We will try to address them before v1.30 release

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[bart0sh]

/lgtm

/assign @mrunalp @SergeyKanzhelev
for a final approval

[mrunalp]

/lgtm

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