Bump core from 448a492 to 4234073 (#1565)

Bumps [core](https://github.com/microsoft/typespec) from `448a492` to
`4234073`.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/microsoft/typespec/commit/423407330c29b3bed534cd24b44b7c69dbecc294"><code>4234073</code></a>
Adopt http\type\property\additional-properties (<a
href="https://redirect.github.com/microsoft/typespec/issues/4463">#4463</a>)</li>
<li><a
href="https://github.com/microsoft/typespec/commit/94ff9d685d99c0e16fbf5d9e51f8408c7ac1829b"><code>94ff9d6</code></a>
Fix regressions during refactor of state accessor (<a
href="https://redirect.github.com/microsoft/typespec/issues/4471">#4471</a>)</li>
<li><a
href="https://github.com/microsoft/typespec/commit/8df0a9f00034c1e441d26d577070230754cddae0"><code>8df0a9f</code></a>
Migrate python emitter (<a
href="https://redirect.github.com/microsoft/typespec/issues/4182">#4182</a>)</li>
<li><a
href="https://github.com/microsoft/typespec/commit/2b0cfe1b8f8d907f828eb958ec0bbaa88bc6e9f3"><code>2b0cfe1</code></a>
Fix the cleanup of file cache in server (<a
href="https://redirect.github.com/microsoft/typespec/issues/4467">#4467</a>)</li>
<li><a
href="https://github.com/microsoft/typespec/commit/2d183a78b90542591f43e3e26273245f9b4bd1b7"><code>2d183a7</code></a>
resolve anonymous model type of lro issue (<a
href="https://redirect.github.com/microsoft/typespec/issues/4448">#4448</a>)</li>
<li><a
href="https://github.com/microsoft/typespec/commit/eda2488e065ac322607de062236fc84c71279536"><code>eda2488</code></a>
http-client-java, minor refactor to emitter (<a
href="https://redirect.github.com/microsoft/typespec/issues/4466">#4466</a>)</li>
<li><a
href="https://github.com/microsoft/typespec/commit/3eed29834600d02c6a1ab3dd039188edf0fb2951"><code>3eed298</code></a>
Use reusable state accessor for compiler decorators (<a
href="https://redirect.github.com/microsoft/typespec/issues/4465">#4465</a>)</li>
<li><a
href="https://github.com/microsoft/typespec/commit/9a28a9c4dc1c69934024924a7a3567aa29457ce8"><code>9a28a9c</code></a>
Default values supporting scalar and object (<a
href="https://redirect.github.com/microsoft/typespec/issues/4423">#4423</a>)</li>
<li>See full diff in <a
href="https://github.com/microsoft/typespec/compare/448a492af5bdbc554ca933c50ec56596e29b2f35...423407330c29b3bed534cd24b44b7c69dbecc294">compare
view</a></li>
</ul>
</details>
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.prettierignore

@@ -78,3 +78,4 @@ packages/samples/common-types/**/*.json
 # Client emitters not part of workspace that shouldn't be needed in this repo
 core/packages/http-client-csharp/
 core/packages/http-client-java/
+core/packages/http-client-python/