* 3.4:
  Add missing dots at the end of exception messages

* 3.4:
  Fix quotes in exception messages

… its id

This PR was merged into the 4.4 branch.

Discussion
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[DI] fix preloading script generation

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | -
| License       | MIT
| Doc PR        | -

(fabbot failure is a false positive)

On master, we should work on being able to preload more classes (esp. all cache-warmup artifacts).

But for 4.4, this is good enough. Submitted as a bug fix because 1. the current code that deals with preloading kinda-works, but only on "dev" mode... and 2. fixing it provides a nice boost!

Small bench on a hello world:
- before: 380 req/s
- after: 580 req/s

That's +50%!

Pro-tip: adding a few `class_exists()` as done in this PR for the classes that are always used in the implementations (e.g. `new Foo()` in the constructor) will help the preload-script generator to work optimally. Without them, it will discover the symbols to preload only if they're found on methods.

Some of those `class_exists()` are mandatory, in relation to anonymous classes and https://bugs.php.net/79349

Commits
-------

a10fc4da5d [DI] fix preloading script generation

* 3.4:
  [Http Foundation] Fix clear cookie samesite
  [Security] Check if firewall is stateless before checking for session/previous session
  [Form] Support customized intl php.ini settings
  [Security] Remember me: allow to set the samesite cookie flag
  [Debug] fix for PHP 7.3.16+/7.4.4+
  [Validator] Backport translations
  Prevent warning in proc_open()