[1.6.x] Support >22 args in Scala 3 (backport #747) by @mkurz

[mergify]

This is an automatic backport of pull request #747 done by Mergify.
Cherry-pick of 1908648 has failed:

On branch mergify/bp/1.6.x/pr-747
Your branch is ahead of 'origin/1.6.x' by 1 commit.
  (use "git push" to publish your local commits)

You are currently cherry-picking commit 1908648.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   build.sbt

no changes added to commit (use "git add" and/or "git commit -a")

Cherry-pick of e9e3dd4 has failed:

On branch mergify/bp/1.6.x/pr-747
Your branch is ahead of 'origin/1.6.x' by 2 commits.
  (use "git push" to publish your local commits)

You are currently cherry-picking commit e9e3dd4.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	new file:   api/shared/src/main/scala/play/twirl/api/Template.scala

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   build.sbt

Cherry-pick of 75eec7c has failed:

On branch mergify/bp/1.6.x/pr-747
Your branch is ahead of 'origin/1.6.x' by 3 commits.
  (use "git push" to publish your local commits)

You are currently cherry-picking commit 75eec7c.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   compiler/src/main/scala/play/twirl/compiler/TwirlCompiler.scala

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   build.sbt

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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