Keep phpdoc @param on expression statements in blink NoSuperfluousPhpdocTags

[TomasVotruba]

Problem

Running ecs check --blink on the rector codebase stripped a valid closure-param docblock:

/** @param Use_::TYPE_* $useType */
$this->useImportsTraverser->traverserStmts($stmts, static function (int $useType, ...) { ... });

The PHP engine keeps this tag. Blink removed it, leaving /** */.

Cause

signatureAfter() walks forward from a docblock to find the declaration it documents. When the first significant token is a bare variable (here $this), it was treated as a property declaration via parseProperty(), which returns an empty parameter set. With allow_unused_params: false (rector's config), the @param $useType then looked like an unused param and was dropped.

A docblock before an expression statement is not attached to any function or property, so PHP-CS-Fixer leaves it alone.

Fix

Reject a bare variable as the first token after the docblock unless a property modifier/type preceded it. A property declaration never starts with a bare variable (it requires visibility/var/static/readonly or a type), so this only skips expression statements.

Added a regression test covering the closure-param-before-expression case.

Verified on rector-src: the two affected files (AliasUsesResolver, UsedImportsResolver) are no longer mis-fixed.