Alerting: Add LogicOr operation option (#89258)

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Co-authored-by: brendamuir <100768211+brendamuir@users.noreply.github.com>

pkg/expr/query.request.schema.json

@@ -559,7 +559,8 @@
                           "type": "string",
                           "enum": [
                             "and",
-                            "or"
+                            "or",
+                            "logic-or"
                           ],
                           "x-enum-description": {}
                         }