fuse adaptor: bugfix: Fix function declaration order and header dependency (alibaba#1127)

This PR resolves two critical compilation issues in the FUSE adaptor session loop:
1. Fixed function declaration order for fuse_session_receive_splice overloads
Moved the 3-argument overload definition after the 4-argument version in
session_loop.cpp. Previously caused compilation failure: the 3-arg version called
the undeclared 4-arg function (defined later in the file). No functional change
C purely structural reorganization for correct declaration sequence.
2. Added missing header dependency
Included <liburing.h> in session_loop.h .Ensures header self-containment for
liburing-dependent types used by consumers of this header.Prevents potential
"undefined type" errors in downstream compilation units.

Author: haolianglh

fs/fuse_adaptor/session_loop.cpp

@@ -108,13 +108,6 @@ struct fuse_pipe {
     }
 };
 
-int fuse_session_receive_splice(
-        struct fuse_session *se,
-        struct fuse_buf *buf,
-        struct fuse_pipe *iopipe) {
-    return fuse_session_receive_splice(se, buf, iopipe, fuse_session_fd(se));
-}
-
 int fuse_session_receive_splice(
         struct fuse_session *se,
         struct fuse_buf *buf,
@@ -172,6 +165,13 @@ int fuse_session_receive_splice(
     return res;
 }
 
+int fuse_session_receive_splice(
+        struct fuse_session *se,
+        struct fuse_buf *buf,
+        struct fuse_pipe *iopipe) {
+    return fuse_session_receive_splice(se, buf, iopipe, fuse_session_fd(se));
+}
+
 int fuse_session_receive_fd(
         struct fuse_session *se,
         struct fuse_buf *buf,

fs/fuse_adaptor/session_loop.h

@@ -26,6 +26,8 @@ limitations under the License.
 #include <fuse.h>
 #endif
 
+#include <liburing.h>
+
 namespace photon {
 namespace fs {