fix: support both PHPStan 1.x and 2.x signatures in gatherAnalyserErrors()

[herpaderpaldent]

Problem

gatherAnalyserErrors() in TestCaseForTypeCoverage calls
RuleErrorTransformer::transform() with arguments that only match the PHPStan 2.x signature, causing a fatal TypeError for PHPStan 1.x users:

TypeError: PHPStan\Analyser\RuleErrorTransformer::transform(): Argument #3 ($nodeType)
must be of type string, array given, called in
.../pest-plugin-type-coverage/src/TestCaseForTypeCoverage.php on line 121

The two signatures differ between major versions:

Version	Arg 3	Arg 4
PHPStan 1.x	string $nodeType	int $nodeLine
PHPStan 2.x	array $fileNodes	Node $node

The previous code passed ([], $node) which satisfies PHPStan 2.x but throws a fatal TypeError on PHPStan 1.x because $nodeType must be string, not array.

Fix

Add a private callTransform() helper that uses reflection (result cached via a static variable, so the check is done only once per process) to detect the installed PHPStan version's signature and dispatch to the correct call.

• PHPStan 1.x path: transform($ruleError, $scope, $nodeType, $node->getLine())
• PHPStan 2.x path: transform($ruleError, $scope, [], $node)

This fixes --type-coverage for PHPStan 1.x users without breaking PHPStan 2.x.