minor #18706 Update components marked experimental (alamirault)

This PR was squashed before being merged into the 6.4 branch.

Discussion
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Update components marked experimental

Fix #18688

I checked also on this branch

- symfony/symfony#51246
- symfony/symfony#51247
- symfony/symfony#51248
- symfony/symfony#51249

Commits
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1304e44 Update components marked experimental

Author: javiereguiluz

frontend.rst

@@ -13,13 +13,13 @@ fast frontend, *and* enjoy the process:
   things like JSX (React), Vue or TypeScript.
 
 * :ref:`AssetMapper <frontend-asset-mapper>`, is a production-ready simpler alternative
-  to Webpack Encore that runs entirely in PHP. It's currently experimental.
+  to Webpack Encore that runs entirely in PHP.
 
 ================================  =================  ======================================================
                                   Encore             AssetMapper
 ================================  =================  ======================================================
 Production Ready?                 yes                yes
-Stable?                           yes                :doc:`experimental </contributing/code/experimental>`
+Stable?                           yes                yes
 Requirements                      Node.js            none: pure PHP
 Requires a build step?            yes                no
 Works in all browsers?            yes                yes
@@ -121,7 +121,6 @@ AssetMapper
 AssetMapper is an alternative to Webpack Encore that runs entirely in PHP
 without any complex build steps. It leverages the ``importmap`` feature of
 your browser, which is available in all browsers thanks to a polyfill.
-AssetMapper is currently :doc:`experimental </contributing/code/experimental>`.
 
 :doc:`Read the AssetMapper Documentation </frontend/asset_mapper>`
 

security/access_token.rst

@@ -349,10 +349,6 @@ authentication layer on top of the OAuth 2.0 authorization framework. It allows
 to verify the identity of an end user based on the authentication performed by
 an authorization server.
 
-.. caution::
-
-    This feature is experimental and could change or be removed at any time without prior notice.
-
 1) Configure the OidcUserInfoTokenHandler
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~