fix: Invert boolean return in GetAcknowledgementsRequest (#37014)

* fix: Invert boolean return in GetAcknowledgementsRequest

The GetAcknowledgementsRequest was returning an incorrect boolean value,
causing unexpected behavior. This change inverts the return value to
fix the logical error.

Testing:
- Issue identified during test plan script development
- Test plan changes will be referenced in a separate change

src/app/server/DefaultTermsAndConditionsProvider.cpp

@@ -211,7 +211,9 @@ CHIP_ERROR chip::app::DefaultTermsAndConditionsProvider::GetAcknowledgementsRequ
 
     TermsAndConditions requiredTermsAndConditions = requiredTermsAndConditionsMaybe.Value();
     TermsAndConditions acceptedTermsAndConditions = acceptedTermsAndConditionsMaybe.Value();
-    outAcknowledgementsRequired                   = requiredTermsAndConditions.Validate(acceptedTermsAndConditions);
+
+    bool requiredTermsAndConditionsAreAccepted = requiredTermsAndConditions.Validate(acceptedTermsAndConditions);
+    outAcknowledgementsRequired                = !requiredTermsAndConditionsAreAccepted;
     return CHIP_NO_ERROR;
 }