This PR was merged into the 4.1 branch.Discussion----------[Form] mention "help" field option in UPGRADE file| Q             | A| ------------- | ---| Branch?       | 4.1 <!-- see below -->| Bug fix?      | no| New feature?  | no <!-- don't forget to update src/**/CHANGELOG.md files -->| BC breaks?    | no     <!-- seehttps://symfony.com/bc -->| Deprecations? | no <!-- 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 | #...   <!-- #-prefixed issue number(s), if any -->| License       | MITWhen you have your own Form Extension to handle help option (e.g. similar to the one mentioned in the [blog post](https://symfony.com/blog/new-in-symfony-4-1-form-field-help)), it starts to render twice in the form after upgrading to 4.1 (where#26332 was added)<!--Write a short README entry for your feature/bugfix here (replace this comment block.)This will help people understand your PR and can be used as a start of the Doc PR.Additionally: - Bug fixes must be submitted against the lowest branch where they apply   (lowest branches are regularly merged to upper ones so they get the fixes too). - Features and deprecations must be submitted against the master branch.-->Commits-------744362a update UPGRADE-4.1 for feature#26332 Form field help option

This reverts commit9fda6d3, reversingchanges made toca53d3e.

… (curry684)This PR was submitted for the master branch but it was squashed and merged into the 4.1 branch instead (closes#27415).Discussion----------Insert correct parameter_bag service in AbstractControllerReverts this feature being broken in3051289#diff-ef10778bc68793f8c8f4b71a7ba67790R86 - `getParameter` could never work now as it was querying the container itself instead of the parameter bag.| Q             | A| ------------- | ---| Branch?       | 4.1| Bug fix?      | yes| New feature?  | no| BC breaks?    | no| Deprecations? | no| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->| License       | MITAlso see comments at#25439 (comment)Commits-------37270d7 Insert correct parameter_bag service in AbstractController

…(ostrolucky)" (nicolas-grekas)This PR was merged into the 4.1 branch.Discussion----------Revert "feature#26702 Mark ExceptionInterfaces throwable (ostrolucky)"This reverts commit9fda6d3, reversingchanges made toca53d3e.| Q             | A| ------------- | ---| Branch?       | 4.1| Bug fix?      | yes| New feature?  | no| BC breaks?    | no| Deprecations? | no| Tests pass?   | yes| Fixed tickets |#27419| License       | MIT| Doc PR        | -#26702 introduced a BC break.Commits-------2ddb89b Revert "feature#26702 Mark ExceptionInterfaces throwable (ostrolucky)"

released v4.1.0