- Added a new CLI flag `--emulation-forward-compatible`
  Added a new CLI `--runtime-config-emulation-forward-compatible` ([#130354](https://github.com/kubernetes/kubernetes/pull/130354), [@siyuanfoundation](https://github.com/siyuanfoundation)) [SIG API Machinery, Etcd and Testing]

- Reset streams when an error happens during port-forward allowing kubectl to maintain port-forward connection open. ([#128318](https://github.com/kubernetes/kubernetes/pull/128318), [@soltysh](https://github.com/soltysh)) [SIG API Machinery, CLI and Node]

<code>q = x / y</code> and remainder <code>r = x % y</code> satisfy the following
relationships:
</p>

<pre>
x = q*y + r  and  |r| &lt; |y|
</pre>

<p>
with <code>x / y</code> truncated towards zero
(<a href="https://en.wikipedia.org/wiki/Modulo_operation">"truncated division"</a>).
</p>

<pre>
 x     y     x / y     x % y
 5     3       1         2
-5     3      -1        -2

  If you maintain controllers that previously relied on matchLabelKeys (for instance, to simulate scheduling), 
  you likely no longer need to handle matchLabelKeys directly. Instead, you can just rely on the labelSelector field going forward.
  
  Additionally, a new feature gate `MatchLabelKeysInPodTopologySpreadSelectorMerge`, which is enabled by default, has been