fix: [disk-encrypt] Disk decrypt failed.

-- Add _FILE_OFFSET_BITS=64 and _LARGEFILE64_SOURCE compile definitions
to enable 64-bit file operations, fixing decryption failures on
partitions larger than 2GB.
-- Resolves seek position errors and line 951 execution failure in
diskencrypt.cpp when processing large disk partitions.

Log: fix issue
Bug: https://pms.uniontech.com/bug-view-327113.html

Author: GongHeng2017

src/dde-file-manager-daemon/daemonplugin-file-encrypt/CMakeLists.txt

@@ -56,7 +56,11 @@ target_include_directories(${PROJECT_NAME}
     ${dfm-mount_INCLUDE_DIRS}
 )
 
-target_compile_definitions(${PROJECT_NAME} PRIVATE DFMPLUGIN_DISK_ENCRYPT_LIBRARY)
+target_compile_definitions(${PROJECT_NAME} PRIVATE
+    DFMPLUGIN_DISK_ENCRYPT_LIBRARY
+    _FILE_OFFSET_BITS=64
+    _LARGEFILE64_SOURCE
+)
 set_target_properties(${PROJECT_NAME} PROPERTIES LIBRARY_OUTPUT_DIRECTORY ../../)
 
 install(TARGETS ${PROJECT_NAME} LIBRARY DESTINATION ${DFM_PLUGIN_DAEMON_EDGE_DIR})