fix(ops): disallow auto-borrowing OpState across potential await point (#16952)

Fixes https://github.com/denoland/deno/issues/16934

Example compiler error:
```
error: mutable opstate is not supported in async ops
   --> core/ops_builtin.rs:122:1
    |
122 | #[op]
    | ^^^^^
    |
    = note: this error originates in the attribute macro `op` (in Nightly builds, run with -Z macro-backtrace for more info)
```

1 files changed, 3 insertions, 1 deletions

diff --git a/ops/optimizer.rs b/ops/optimizer.rs
index 17435407c..99de4b424 100644
--- a/ops/optimizer.rs
+++ b/ops/optimizer.rs
@@ -650,7 +650,9 @@ impl Optimizer {
             let segment = single_segment(segments)?;
             match segment {
               // Is `T` a OpState?
-              PathSegment { ident, .. } if ident == "OpState" => {
+              PathSegment { ident, .. }
+                if ident == "OpState" && !self.is_async =>
+              {
                 self.has_ref_opstate = true;
               }
               // Is `T` a str?