LogQL is modified when changed the time-range or severity in RHOCP 4

Issue

• When executing a The LogQL query from Observe > Logs, it's changed the label matched operator if it was defined as a regular expression when using the control time-range or severity.
• The LogQL query { log_type="infrastructure", kubernetes_pod_name~=".*etcd.*" } | json was changed to { log_type="infrastructure", kubernetes_pod_name=".*etcd.*" } | json after selecting a different time-range.