[TomasVotruba]

The scoped build (which publishes rectorphp/rector) fails at the PHP 7.4 lint step:

PHP Parse error: syntax error, unexpected 'array' (T_ARRAY), expecting variable
  in src/RuleDoc/RuleDefinition.php on line 24

The inlined Rector\RuleDoc classes are registered as BC aliases from src/functions/rule_doc_generator_class_aliases.php, which is a composer files autoload - so it runs on bootstrap and eagerly loads those classes. During the 7.4 phase of the scoped build the still-8.x source gets parsed and fatals. Previously these classes lived in the symplify/rule-doc-generator-contracts vendor package and were never autoloaded eagerly.

Same pattern already used for the other files autoload entry (node_helper.php): downgrade it early, under PHP 8.4, before the version switch. This extends that step to src/RuleDoc, so the class-alias bootstrap can load them under 7.4.