netutils/rexecd: forward PRIORITY/STACKSIZE config in CMake build

The Makefile build already forwards both values via PRIORITY /
STACKSIZE.  Align the CMake build with the Makefile so that
CONFIG_NETUTILS_REXECD_PRIORITY and CONFIG_NETUTILS_REXECD_STACKSIZE
take effect under CMake as well.

Assisted-by: GitHubCopilot:claude-4.8-opus
Signed-off-by: wangjianyu3 <wangjianyu3@xiaomi.com>

Author: JianyuWang0623

netutils/rexecd/CMakeLists.txt

@@ -21,5 +21,13 @@
 # ##############################################################################
 
 if(CONFIG_NETUTILS_REXECD)
-  nuttx_add_application(NAME rexecd SRCS rexecd.c)
+  nuttx_add_application(
+    NAME
+    rexecd
+    SRCS
+    rexecd.c
+    STACKSIZE
+    ${CONFIG_NETUTILS_REXECD_STACKSIZE}
+    PRIORITY
+    ${CONFIG_NETUTILS_REXECD_PRIORITY})
 endif()