tests: lib: gui: lvgl: Add missing DYNAMIC_THREAD dependency

This patch adds a CONFIG_THREAD_STACK_INFO to properly enable
CONFIG_DYNAMIC_THREAD.

Signed-off-by: Fabian Blatz <[email protected]>

Author: faxe1008

tests/lib/gui/lvgl/testcase.yaml

@@ -86,6 +86,7 @@ tests:
       - CONFIG_DYNAMIC_THREAD=y
       - CONFIG_DYNAMIC_THREAD_POOL_SIZE=4
       - CONFIG_DYNAMIC_THREAD_ALLOC=y
+      - CONFIG_THREAD_STACK_INFO=y
     platform_allow:
       - native_sim/native/64
       - native_sim