…variables detected

…nvironment variables detected (voronkovich)

This PR was squashed before being merged into the 3.2 branch (closes #22976).

Discussion
----------

[DependencyInjection] Use more clear message when unused environment variables detected

| Q             | A
| ------------- | ---
| Branch?       |3.2
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #22955
| License       | MIT

Old error message:
```
Incompatible use of dynamic environment variables "DATABASE_URL", "MAILER_URL" found in parameters.
```

New error message:
```
Environment variables "DATABASE_URL", "MAILER_URL" are never used. Please, check your container's configuration.
```

Commits
-------

6dbdb1b [DependencyInjection] Use more clear message when unused environment variables detected

…tions (yceruto)

This PR was merged into the 2.7 branch.

Discussion
----------

[Form] Mix attr option between guessed options and user options

| Q             | A
| ------------- | ---
| Branch?       | 2.7
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #19871
| License       | MIT

Commits
-------

84f5de9 mix attr options between type-guess options and user options

It seems that when MemcachedAdapter is used with TagAwareAdapter, it fails to fetch items, even though I thoroughly tested fetching items with the exact same keys under the same namespace.

Turns out the issue lies in `const TAGS_PREFIX = "\0tags\0";` for unknown to me reasons. Hardcoding that to '__tags__' in my project did the trick and I've been using it for a couple of days now and it seems fine.

The reason I had to completely copy/paste this file in my local project is self:: instead of static:: usage. I am not sure whether that is a mistake or is done on purpose, but in order to have this work for me I need to be able to override that constant. Going with static:: seems like a good solution to me, then I can set whatever prefix I need for the tags.

…(wucdbm)

This PR was submitted for the 3.3 branch but it was merged into the 3.2 branch instead (closes #23063).

Discussion
----------

[Cache] Fix extensibility of TagAwareAdapter::TAGS_PREFIX

| Q             | A
| ------------- | ---
| Branch?       | 3.3
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        |

It seems that when MemcachedAdapter is used with TagAwareAdapter, it fails to fetch items, even though I thoroughly tested fetching items with the exact same keys under the same namespace.

Edit: Just to clarify, `CacheItem::isHit()` always returned `false`. This is what I meant with the above.

Turns out the issue lies in `const TAGS_PREFIX = "\0tags\0";` for unknown to me reasons. Hardcoding that to `'__tags__'` in my project did the trick and I've been using it for a couple of days now and it seems fine.

The reason I had to completely copy/paste this file in my local project is `self::` instead of `static::` usage. I am not sure whether that is a mistake or is done on purpose, but in order to have this work for me I need to be able to override that constant. Going with static:: seems like a good solution to me, then I can set whatever prefix I need for the tags.

PS: Not exactly sure what to do with tests. Any help would be appreciated.

Commits
-------

405f64b [Cache] MemcachedAdapter not working with TagAwareAdapter

This PR was merged into the 2.7 branch.

Discussion
----------

[TwigBridge] Fix namespaced classes

| Q             | A
| ------------- | ---
| Branch?       | 2.7 <!-- see comment below -->
| Bug fix?      | yes
| New feature?  | no <!-- don't forget updating src/**/CHANGELOG.md files -->
| BC breaks?    | no
| Deprecations? | no <!-- don't forget updating UPGRADE-*.md files -->
| Tests pass?   | yes
| Fixed tickets | #23072 <!-- #-prefixed issue number(s), if any -->
| License       | MIT
| Doc PR        | N/A

Commits
-------

a1cdc2d [TwigBridge] Fix namespaced classes

* 2.7:
  [TwigBridge] Fix namespaced classes
  mix attr options between type-guess options and user options

* 2.8:
  [TwigBridge] Fix namespaced classes
  mix attr options between type-guess options and user options

* 3.2:
  [TwigBridge] Fix namespaced classes
  [Cache] MemcachedAdapter not working with TagAwareAdapter
  [DependencyInjection] Use more clear message when unused environment variables detected
  mix attr options between type-guess options and user options

released v3.3.2