[docs] Hide hash support section from search parameters (#27660)

# Why

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issues, forums posts, or feature requests.
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Follow-up #27105


# How

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How did you build this feature or fix this bug and why?
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After confirming with @marklawlor, the "Hash support" section is
unversioned for now so we should hide it.

# Test Plan

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reproduce your test, especially if this PR does not include automated
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Run docs locally and visit:
http://localhost:3002/router/reference/search-parameters/

## Preview

![CleanShot 2024-03-14 at 17 50
16@2x](https://github.com/expo/expo/assets/10234615/207ddeff-1df1-4ecb-934a-14dead6c7454)


# Checklist

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- [ ] Documentation is up to date to reflect these changes (eg:
https://docs.expo.dev and README.md).
- [ ] Conforms with the [Documentation Writing Style
Guide](https://github.com/expo/expo/blob/main/guides/Expo%20Documentation%20Writing%20Style%20Guide.md)
- [ ] This diff will work correctly for `npx expo prebuild` & EAS Build
(eg: updated a module plugin).

docs/pages/router/reference/search-parameters.mdx

@@ -252,9 +252,12 @@ export default function User() {
 }
 ```
 
-## Hash support
+{/* ## Hash support */}
 
-The URL [hash](https://developer.mozilla.org/en-US/docs/Web/API/URL/hash) is a string that follows the `#` symbol in a URL. It is commonly used on websites to link to a specific section of a page, but it can also be used to store data. Expo Router treats the hash as a special search parameter using the name `#`. It can be accessed and modified using the same hooks and APIs from [search parameters](/router/reference/search-parameters/).
+{/* The URL [hash](https://developer.mozilla.org/en-US/docs/Web/API/URL/hash) is a string that follows the `#` symbol in a URL. It is commonly used on websites to link to a specific section of a page, but it can also be used to store data. Expo Router treats the hash as a special search parameter using the name `#`. It can be accessed and modified using the same hooks and APIs from [search parameters](/router/reference/search-parameters/). */}
+
+{/* prettier-ignore */}
+{/*
 
 ```tsx app/hash.tsx
 import { Text } from 'react-native';
@@ -273,3 +276,5 @@ export default function User() {
   );
 }
 ```
+
+\*/}