Custom variable in grafana with Stream selector {$label_name=~"$label_value"} is not correct works

[Vitaliy155]

Describe the bug
Grafana dashboard variable works incorrect where variable definition as {$label_name=~"$label_value"}

To Reproduce

1. Create 3 variables in the Grafana dashboard:
   label_name - Query type: Label names;
   label_value - Query type: Label values, Label: {$label_name};
   loglevel - Query type: Label values, Label: loglevel, stream selector: {$label_name=~“$label_value”}

2. Save and go to dashboard.

3. Choose Label name:host, Label value: , level: one of the available levels. In my case it's ERROR.
   There is no level ERROR ... but should be!

Expected behavior
Should be available value from custom variables related to label_value.
As workaround, you can see label_value: "ERROR" without custom variable
if choose:
label_name: "loglevel" and label_value: "ERROR"

Environment:
Grafana: 10.4.3
Loki:3.0.0

Screenshots, Promtail config, or terminal output

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