feature #33258 [HttpKernel] deprecate global dir to load resources from (Tobion)

This PR was merged into the 4.4 branch.

Discussion
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[HttpKernel] deprecate global dir to load resources from

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | no
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| BC breaks?    | no     <!-- see https://symfony.com/bc -->
| Deprecations? | yes <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->
| Fixed tickets | #31915   <!-- #-prefixed issue number(s), if any -->
| License       | MIT
| Doc PR        |

Replaces #31958

Here two example deprecations by adding files in the deprecated locations:
```
Overwriting the resource "@AcmeBundle/Resources/config/routing.yaml" with "/vagrant/src/Resources/AcmeBundle/config/routing.yaml" is deprecated since Symfony 4.4 and will be removed in 5.0.
Loading the file "foobar.yaml" from the global resource directory "/vagrant/src" is deprecated since Symfony 4.4 and will be removed in 5.0.
```

Commits
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aa82566f76 [HttpKernel] deprecate global dir to load resources from

Author: nicolas-grekas

Resources/config/services.xml

@@ -91,6 +91,7 @@
             <argument type="collection">
                 <argument>%kernel.root_dir%</argument>
             </argument>
+            <argument>false</argument>
         </service>
         <service id="Symfony\Component\HttpKernel\Config\FileLocator" alias="file_locator" />