fix(windows/capture): unsafe block for the extracted dup_into_public call

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

crates/pf-capture/src/windows/idd_push.rs

@@ -2076,7 +2076,9 @@ fn deliver_cursor_channel(
     cs: &cursor::CursorShared,
     send_cursor: &crate::CursorChannelSender,
 ) -> bool {
-    let value = match broker.dup_into_public(cs.section_handle()) {
+    // SAFETY: `cs.section_handle()` borrows the section mapping `cs` owns (live across this
+    // synchronous call); the broker's WUDFHost process handle is live for the broker's lifetime.
+    let value = match unsafe { broker.dup_into_public(cs.section_handle()) } {
         Ok(v) => v,
         Err(e) => {
             tracing::warn!("cursor section duplication failed (composited cursor stays): {e:#}");