fix(mavlink): Hardcode PX4_MAX_FILEPATH for log handler to avoid case when (#27502)

limits.h is included before the definition in some locations and not others
(which would trigger a setting of 1024) resulting in conflicting definitions.

src/modules/mavlink/mavlink_log_handler.h

@@ -41,12 +41,9 @@
 #define PX4_MAX_FILEPATH       CONFIG_PATH_MAX
 #define PX4_MAX_FILEPATH_SCANF 255
 #else
-#ifndef PATH_MAX
-#define PATH_MAX 1024 // maximum on macOS
-#endif
 #define PX4LOG_REGULAR_FILE    DT_REG
 #define PX4LOG_DIRECTORY       DT_DIR
-#define PX4_MAX_FILEPATH       PATH_MAX
+#define PX4_MAX_FILEPATH       1024
 #define PX4_MAX_FILEPATH_SCANF 1023
 #endif