feat(code-gen/experimental: few percent speedup of array validation

At some array size, setting the `[].length = 1000` is even faster. However, many more use-cases have smaller arrays, so let's go for that.

Author: dirkdev98

packages/cli/src/generated/cli/validators.js

@@ -604,10 +604,7 @@ export function validatorJavascriptArray(file, type, validatorState) {
   }
 
   // Initialize result array
-  fileWrite(
-    file,
-    `${resultPath} = Array.from({ length: ${currentValuePath}.length });`,
-  );
+  fileWrite(file, `${resultPath} = [];`);
 
   // Loop through array
   const idxVariable = `i${validatorState.reusedVariableIndex++}`;