Load new php 8.4 map

Author: Seldaek

src/Reflection/SignatureMap/FunctionSignatureMapProvider.php

@@ -246,6 +246,15 @@ public function getSignatureMap(): array
 $signatureMap = $this->computeSignatureMap($signatureMap, $php83MapDelta);
 }
 
+if ($this->phpVersion->getVersionId() >= 80400) {
+$php84MapDelta = require __DIR__ . '/../../../resources/functionMap_php84delta.php';
+if (!is_array($php84MapDelta)) {
+throw new ShouldNotHappenException('Signature map could not be loaded.');
+}
+
+$signatureMap = $this->computeSignatureMap($signatureMap, $php84MapDelta);
+}
+
 return self::$signatureMaps[$cacheKey] = $signatureMap;
 }