Fix #2056 - Provide a default empty config per editor env (#2058)

* Fix #2056 - Provide a default empty config per editor env

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

pyscript.core/src/plugins/py-editor.js

@@ -43,6 +43,8 @@ async function execute({ currentTarget }) {
                 : JSON;
             details.config = parse(await fetch(config).then((r) => r.text()));
             details.version = offline_interpreter(details.config);
+        } else {
+            details.config = {};
         }
 
         const xworker = XWorker.call(new Hook(null, hooks), srcLink, details);