Fix inspector hanging when task budget is exceeded (#5083)

The issue is solved by proxying websocket messages over a pair of
`futures::mpsc::unbounded` channels. As these are are implemented in
the 'futures' crate, they can't participate in Tokio's cooperative
task yielding.

1 files changed, 6 insertions, 0 deletions

diff --git a/cli/tests/inspector3.js b/cli/tests/inspector3.js
new file mode 100644
index 000000000..de079a1bc
--- /dev/null
+++ b/cli/tests/inspector3.js
@@ -0,0 +1,6 @@
+for (let i = 0; i < 128; i++) {
+  console.log(i);
+  debugger;
+}
+await new Promise((res, _) => setTimeout(res, 100));
+console.log("done");