Adjust Parameter::asNumber() behaviour to match closer the PHP one

src/core/etl/src/Flow/ETL/Function/Parameter.php

@@ -153,11 +153,17 @@ public function asNumber(Row $row, FlowContext $context, int|float|null $default
     {
         $result = $this->eval($row, $context);
 
-        if (\is_string($result)) {
+        if (!\is_numeric($result)) {
             return $default;
         }
 
-        return \is_numeric($result) ? $result : $default;
+        return match (true) {
+            \is_int($result),
+            \is_float($result) => $result,
+            ($result == (int) $result) => (int) $result,
+            ($result == (float) $result) => (float) $result,
+            default => $default,
+        };
     }
 
     public function asObject(Row $row, FlowContext $context) : ?object

src/core/etl/tests/Flow/ETL/Tests/Unit/Function/ParameterTest.php

@@ -67,6 +67,10 @@ public static function number_data_provider() : \Generator
         yield 'zero' => [0, null, 0];
         yield 'negative integer' => [-42, null, -42];
         yield 'negative float' => [-3.14, null, -3.14];
+        yield 'integer as string' => ['99', null, 99];
+        yield 'float as string' => ['99.5', null, 99.5];
+        yield 'negative integer as string' => ['-42', null, -42];
+        yield 'negative float as string' => ['-3.14', null, -3.14];
         yield 'string with default' => ['not numeric', 99, 99];
         yield 'string with float default' => ['not numeric', 99.5, 99.5];
         yield 'boolean with default' => [true, 99, 99];