chore(aap): use from_json_bytes again

Author: christophe-papazian

ddtrace/appsec/_ddwaf/waf.py

@@ -59,12 +59,9 @@ def __init__(
             key_regex=obfuscation_parameter_key_regexp, value_regex=obfuscation_parameter_value_regexp
         )
         diagnostics = ddwaf_object()
-        ruleset_map_object = None
-        try:
-            dct = json.loads(ruleset_json_str)
-        except Exception:
-            dct = {}
-        ruleset_map_object = ddwaf_object.create_without_limits(dct)
+        ruleset_map_object = ddwaf_object.from_json_bytes(ruleset_json_str)
+        if not ruleset_map_object:
+            raise ValueError("Invalid ruleset provided to DDWaf constructor")
         self._builder = py_ddwaf_builder_init(config)
         py_add_or_update_config(self._builder, ASM_DD_DEFAULT, ruleset_map_object, diagnostics)
         self._handle = py_ddwaf_builder_build_instance(self._builder)