tests: context: disable if DEMAND_PAGING

Until #31333 is resolved, the periodic timer in the eviction
algorithm interacts with this test in such a way that the system
deadlocks.

Signed-off-by: Andrew Boie <[email protected]>

Author: Andrew Boie

tests/kernel/context/testcase.yaml

@@ -1,3 +1,5 @@
 tests:
-  kernel.common:
+  kernel.context:
     tags: kernel
+    # Bug is #31333
+    filter: not CONFIG_DEMAND_PAGING