…ner null return type (Simperfit)

This PR was merged into the 4.4 branch.

Discussion
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[FrameworkBundle] WebTestCase KernelBrowser::getContainer null return type

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | no
| New feature?  | no <!-- don't forget to update src/**/CHANGELOG.md files -->
| BC breaks?    | no     <!-- see https://symfony.com/bc -->
| Deprecations? | yes <!-- don't forget to update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->
| Fixed tickets | #25920  <!-- #-prefixed issue number(s), if any -->
| License       | MIT
| Doc PR        |  <!-- required for new features -->

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   (lowest branches are regularly merged to upper ones so they get the fixes too).
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As @stof suggested in the #25920 I started deprecating the behaviour of returning null when the container is non booted / null.

If this is not wanted we should close both the PR and the issue ;).

Commits
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e169e1a [FrameworkBundle] WebTestCase KernelBrowser::getContainer null return type

…eal one instead (nicolas-grekas)

This PR was merged into the 4.4 branch.

Discussion
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[FrameworkBundle] Don't reset the test container but the real one instead

| Q             | A
| ------------- | ---
| Branch?       | 4.4 for features / 3.4 or 4.3 for bug fixes <!-- see below -->
| Bug fix?      | yes/no
| New feature?  | yes/no <!-- please update src/**/CHANGELOG.md files -->
| Deprecations? | yes/no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tickets       | Fix #... <!-- prefix each issue number with "Fix #", if any -->
| License       | MIT
| Doc PR        | -

After #31202 and #32056, the tearDown method keeps throwing deprecation notices about "Getting the container from a non-booted kernel". The reason is that resetting the test-container calls `$kernel->getContainer()` while the kernel has been shut down.

This fixes it and a few other glitches found meanwhile.

Commits
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8e16143 [FrameworkBundle] Dont reset the test container but the real one instead

Since 5.0 the parent implementation throws an exception anyway making the overwrites obsolete, see symfony#31202

Since 5.0 the parent implementation throws an exception anyway making the overwrites obsolete, see symfony#31202

…s (Tobion)

This PR was merged into the 5.0 branch.

Discussion
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[FrameworkBundle] remove getContainer overwrites in tests

| Q             | A
| ------------- | ---
| Branch?       | 5.0
| Bug fix?      | no
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tickets       |
| Doc PR        |

Since 5.0 the parent implementation throws an exception anyway making the overwrites obsolete, see #31202

Commits
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5ef9390 remove getContainer overwrites in tests

Since 5.0 the parent implementation throws an exception anyway making the overwrites obsolete, see symfony/symfony#31202

Since 5.0 the parent implementation throws an exception anyway making the overwrites obsolete, see symfony/symfony#31202

Since 5.0 the parent implementation throws an exception anyway making the overwrites obsolete, see symfony#31202

Since 5.0 the parent implementation throws an exception anyway making the overwrites obsolete, see symfony#31202