Revert changing os_file_handle to int on Zephyr

Signed-off-by: Krisztian Szilvasi <[email protected]>

Author: kr-t

core/iwasm/libraries/libc-wasi/sandboxed-system-primitives/src/posix.c

@@ -2213,7 +2213,7 @@ wasmtime_ssp_poll_oneoff(wasm_exec_env_t exec_env, struct fd_table *curfds,
 
 // Temporary workaround (see PR#4377)
 #ifdef BH_PLATFORM_ZEPHYR
-                    int tfd = fos[i]->file_handle->fd;
+                    os_file_handle tfd = fos[i]->file_handle->fd;
 #else
                     os_file_handle tfd = fos[i]->file_handle;
 #endif