Fix MCP installation docs: correct packages for Symfony and Laravel (#2266)

* Initial plan

* Fix MCP docs: Symfony needs api-platform/mcp, Laravel doesn't need explicit symfony/mcp-bundle

Co-authored-by: soyuka <1321971+soyuka@users.noreply.github.com>

* Fix MCP install docs: restore MCP Bundle link, update Laravel command, remove 'optional' text

Co-authored-by: soyuka <1321971+soyuka@users.noreply.github.com>

* Fix MCP docs: both Symfony and Laravel require api-platform/mcp and symfony/mcp-bundle

Co-authored-by: soyuka <1321971+soyuka@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: soyuka <1321971+soyuka@users.noreply.github.com>

Author: Copilot

core/mcp.md

@@ -14,15 +14,15 @@ validation, serialization — to turn your PHP classes into MCP-compliant tool d
 
 ### Symfony
 
-Install the [MCP Bundle](https://github.com/symfony-tools/mcp-bundle):
+Install `api-platform/mcp` and the [MCP Bundle](https://github.com/symfony-tools/mcp-bundle):
 
 ```console
-composer require symfony/mcp-bundle
+composer require api-platform/mcp symfony/mcp-bundle
 ```
 
 ### Laravel
 
-MCP support is optional in Laravel. Install the required packages:
+Install `api-platform/mcp` and the [MCP Bundle](https://github.com/symfony-tools/mcp-bundle):
 
 ```console
 composer require api-platform/mcp symfony/mcp-bundle