[DomCrawler] Fixed creating form objects from form nodes.
bug #9884 [DomCrawler] Fixed creating form objects from named form nodes (jakzal)

This PR was merged into the 2.3 branch.

Discussion
----------

[DomCrawler] Fixed creating form objects from named form nodes

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #9619
| License       | MIT
| Doc PR        | -

Commits
-------

72d6322 [DomCrawler] Fixed creating form objects from form nodes.