bug #30396 [Form] Avoid a form type extension appears many times in debug:form (markitosgv)
bug #30396 [Form] Avoid a form type extension appears many times in debug:form (markitosgv)

This PR was merged into the 4.2 branch.

Discussion
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[Form] Avoid a form type extension appears many times in debug:form

| Q             | A
| ------------- | ---
| Branch?       | 4.2
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #30394    <!-- #-prefixed issue number(s), if any -->
| License       | MIT

This PR fixes #30394. Avoid a form type extension appears many times in debug:form command. This is caused by new 4.2 feature getExtendedTypes().

Commits
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c4be39ce21 [Form] Fixes debug:form appears many times as type extensions configured with new getExtendedTypes method

symfony/Form