resolve linting on lower PHP versions

Incorporates #3613 (comment), #3613 (comment)

Author: pmjones

src/Type/Php/ExplodeFunctionDynamicReturnTypeExtension.php

@@ -66,7 +66,8 @@ public function getTypeFromFunctionCall(
 			$accessory[] = new AccessoryUppercaseStringType();
 		}
 		if (count($accessory) > 0) {
-			$returnValueType = new IntersectionType([new StringType(), ...$accessory]);
+			$accessory[] = new StringType();
+			$returnValueType = new IntersectionType($accessory);
 		} else {
 			$returnValueType = new StringType();
 		}

src/Type/Php/ParseStrParameterOutTypeExtension.php

@@ -45,7 +45,8 @@ public function getParameterOutTypeFromFunctionCall(FunctionReflection $function
 			$accessory[] = new AccessoryUppercaseStringType();
 		}
 		if (count($accessory) > 0) {
-			$valueType = new IntersectionType([new StringType(), ...$accessory]);
+			$accessory[] = new StringType();
+			$valueType = new IntersectionType($accessory);
 		} else {
 			$valueType = new StringType();
 		}