Mini map median not visible

[mevionfamos]

Description

In some edge cases, the operator's value exactly matches the median, resulting in an invisible median on the chart (unless you hover)

Reproduction Steps

1. Navigate to https://elcom-strompreis-dev.interactivethings.io/map?priceComponent=charge&tab=sunshine&indicator=saidi&activeId=37
2. Observe that the operator's value exactly matches the median, resulting in an invisible median on the chart (unless you hover)

Expected Behavior

Design should account for this edge case so that both the operator and the median lines are visible on the chart.

Additional Context

Test Environment

• Ref
• Abn
• Prod