cargo: Bump rustc to 1.89 (#36818)

Update Rustc to 1.89.

Reviewable by commit.

Leftover work:
- #37330 
- #38777

---------

Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>
Co-authored-by: sagudev <16504129+sagudev@users.noreply.github.com>

components/net/decoder.rs

@@ -285,7 +285,7 @@ impl Stream for BodyStream {
                         return Poll::Ready(None);
                     }
                 }
-                Poll::Ready(Some(Err(io::Error::new(io::ErrorKind::Other, err))))
+                Poll::Ready(Some(Err(io::Error::other(err))))
             },
             None => Poll::Ready(None),
         }