Auto merge of #11646 - Nilstrieb:compiler-does-not-comply-with-the-lints!!, r=giraffate

Make `multiple_unsafe_ops_per_block` ignore await desugaring

The await desugaring contains two calls (`Poll::new_unchecked` and `get_context`) inside a single unsafe block. That violates the lint.

fixes #11312

changelog: [`multiple_unsafe_ops_per_block`]: fix false positives in `.await`

tests/ui/multiple_unsafe_ops_per_block.rs

@@ -147,4 +147,11 @@ fn _field_fn_ptr(x: unsafe fn()) {
     }
 }
 
+// await expands to an unsafe block with several operations, but this is fine.: #11312
+async fn await_desugaring_silent() {
+    async fn helper() {}
+
+    helper().await;
+}
+
 fn main() {}