FROMLIST: rust_binder: freeze_notif_done should resend if wrong state

Consider the following scenario:
1. A freeze notification is delivered to thread 1.
2. The process becomes frozen or unfrozen.
3. The message for step 2 is delivered to thread 2 and ignored because
   there is already a pending notification from step 1.
4. Thread 1 acknowledges the notification from step 1.
In this case, step 4 should ensure that the message ignored in step 3 is
resent as it can now be delivered.

Bug: 442843927
Link: https://lore.kernel.org/r/20251007-binder-freeze-v2-1-5376bd64fb59@google.com


Change-Id: I1157b9ccd7b85bd2f742c7863878d8972f0e0127
Signed-off-by: Alice Ryhl <aliceryhl@google.com>