[Parallel] Improve tests to use file processor over file analyzer + fix missing RectorWithLineChange de/serialization

[TomasVotruba]

Ref rectorphp/rector#2971

[samsonasik]

@TomasVotruba the note [skip ci] message seems make scoped build not started, could you create an empty commit to push to main branch to trigger build?

git checkout main
git commit --allow-empty -m "Trigger notification"
git push origin main

[samsonasik]

@TomasVotruba the scoped build seems still error on latest build on parallel lint, ref https://github.com/rectorphp/rector-src/runs/4649685575?check_suite_focus=true#step:14:79

Parse error: rector-prefixed-downgraded/vendor/rector/rector-nette/src/FileProcessor/NeonFileProcessor.php:44
    42|     {
    43|         if ($this->neonRectors === []) {
  > 44|             return;
    45|         }
    46|         $fileContent = $file->getFileContent();
A function with return type must return a value in rector-prefixed-downgraded/vendor/rector/rector-nette/src/FileProcessor/NeonFileProcessor.php on line 44

[samsonasik]

@TomasVotruba I created PR efabrica-team/rector-nette#53 for it.

[samsonasik]

@TomasVotruba it works 🎉

[TomasVotruba]

Thank you 👍