Make CMAB flag optional in decide-all test with ENABLED_FLAGS_ONLY

When using ENABLED_FLAGS_ONLY, CMAB flag with 'off' variation (enabled=false)
gets filtered out. The test now handles this case gracefully by making the
CMAB flag optional and only validating it if present.

Author: Mat001

tests/acceptance/test_acceptance/test_cmab.py

@@ -303,16 +303,20 @@ def test_cmab_decide_all_includes_cmab_flag(session_obj):
     assert resp.status_code == 200
     assert isinstance(results, list), "DecideAll should return a list"
 
-    # Find the CMAB flag in results
+    # Find the CMAB flag in results (may not be present if variation is "off" with ENABLED_FLAGS_ONLY)
     cmab_result = None
     for result in results:
         if result["flagKey"] == CMAB_FLAG_KEY:
             cmab_result = result
             break
 
-    assert cmab_result is not None, f"CMAB flag '{CMAB_FLAG_KEY}' not found in DecideAll response"
-    assert cmab_result["ruleKey"] == CMAB_EXPERIMENT_KEY
-    assert cmab_result["variationKey"] in ["on", "off"]
+    # CMAB flag may not be in response when using ENABLED_FLAGS_ONLY if variation is "off" (enabled=false)
+    # If present, verify it's valid
+    if cmab_result is not None:
+        assert cmab_result["ruleKey"] == CMAB_EXPERIMENT_KEY
+        assert cmab_result["variationKey"] in ["on", "off"]
+        # When present in ENABLED_FLAGS_ONLY response, it must be enabled
+        assert cmab_result.get("enabled") is True, "CMAB flag should be enabled when present in ENABLED_FLAGS_ONLY response"
 
 
 def test_cmab_with_multiple_keys(session_obj):