Since PHP 8.1, null is no longer accepted as $flags, default integer `0` value should be used instead.

…katarnls)

This PR was merged into the 4.4 branch.

Discussion
----------

[Console] Fix PHP 8.1 null error for preg_match flag

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

Since PHP 8.1, `null` is no longer accepted as `$flags` in `preg_match`, default integer `0` value should be used instead.

Commits
-------

52f02e529a [Console] Fix PHP 8.1 null error for preg_match flag

* 4.4:
  Fix PHP 8.1 null values
  [Console] Fix PHP 8.1 null error for preg_match flag
  Fix: Article
  Definition::removeMethodCall should remove all matching calls
  mark the LazyIterator class as internal
  fix extracting mixed type-hinted property types
  keep valid submitted choices when additional choices are submitted

…ace in project directory name

* 4.4:
  install compatible versions of mongodb/mongodb only
  fix resolving parent/self/static type annotations
  [Console] fix QuestionHelper::getHiddenResponse() not working with space in project directory name
  [WebLink] Escape double quotes in attributes values

* 4.4:
  Switched to non-null defaults in exception constructors
  [Routing] fix conflict with param named class in attribute
  [Cache] fix setting items' metadata on commit()

In PHP8, a number of functions who were accepting null arguments will only accept
string ones.

In the polyfill, mb_* functions are declared with a trict type checking of "string".

Therefore, we deprecate the use of non string arguments, so that it won't break when either using the polyfill,
or future php8 versions.

…arguments (Yopai)

This PR was merged into the 4.4 branch.

Discussion
----------

[Console] Handle calls to mb_ functions with non string arguments

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | Fix #40200
| License       | MIT
| Doc PR        | no

In PHP8.1, a number of functions who were accepting null arguments will only accept
string ones.
(see https://wiki.php.net/rfc/deprecate_null_to_scalar_internal_arg)

In the polyfill, mb_* functions are already declared with a strict type checking of "string".

Therefore, it is necessary to get rid of the use of non string arguments when calling mb_* functions,
so that it won't break when either using the polyfill,or future php8 versions.

In every call where the argument may not be a string, this commit enforces the string type of the argument (with transtyping)

--- For reviewers
* I generally don't like transtyping, but found it was the more "secure" way (on a non-BC point of view) here.
Specially in Console/Helper/Table.php, where $cell can be an object (there are 2 "$cell instanceof ... tests)
However, where the argument can already be either null or string (and not anything else), there may a beter approach ?

* It's the first time I send a PR on symfony, so don't hesitate pointing me to thinks I've forgotten to done.

Commits
-------

ac45be2580 In calls to mb_ functions, silently transform arg into string

* 4.4:
  Move github templates at the org level
  [Cache] Fix Redis TLS scheme `rediss` for Redis connection
  In calls to mb_ functions, silently transform arg into string