…'%' (lyrixx)

This PR was merged into the 4.3 branch.

Discussion
----------

[FrameworkBundle] Fixed issue when a parameter contains a '%'

| Q             | A
| ------------- | ---
| Branch?       | master
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #31431
| License       | MIT
| Doc PR        |

---

On my computer:
```
dump(get_cfg_var('xdebug.file_link_format'));
"subl://%f:%l"
```

When I ran `bin/console debug:config framework` I got this exception:

```

In ParameterBag.php line 100:

  [Symfony\Component\DependencyInjection\Exception\ParameterNotFoundException]
  The parameter "templating.helper.code.file_link_format" has a
dependency on a non-existent parameter "f:".

Exception trace:
 () at
/home/gregoire/dev/github.com/lyrixx/symfony/src/Symfony/Component/DependencyInjection/ParameterBag/ParameterBag.php:100
...
```

This issue was introduced [here](https://github.com/symfony/symfony/pull/27684/files#diff-b3847149480405e1de881530b4c75ab5L212) / cc @ro0NL

This PR does not really fix the issue: I'm able to debug the config, The
the `debug:container --env-vars` does not work anymore. How could we fix
both issue? cc @nicolas-grekas

Commits
-------

7bcd714 [FrameworkBundle] Fixed issue when a parameter container a '%'