fix(core): module execution with top level await (#7672)

This commit fixes implementation of top level await in "deno_core".

Previously promise returned from module execution was ignored causing to execute
modules out-of-order.

With this commit promise returned from module execution is stored on "JsRuntime"
and event loop is polled until the promise resolves.

1 files changed, 5 insertions, 0 deletions

diff --git a/cli/tests/top_level_await_bug_nested.js b/cli/tests/top_level_await_bug_nested.js
new file mode 100644
index 000000000..894f0de2d
--- /dev/null
+++ b/cli/tests/top_level_await_bug_nested.js
@@ -0,0 +1,5 @@
+const sleep = (n) => new Promise((r) => setTimeout(r, n));
+
+await sleep(100);
+
+export default 1;