Decimals formatting not possible

[Snubbeke]

How can I format decimals in this card since templating does not work?
For example {{ states('sensor.victron_ble_esp32_mppt_output_current') | float(1) }} does not work.

See also issue #51:

Another angle on this... the card doesn't reflect the suggested_display_precision set on a MQTT Sensor.

HA Blog Feb 2023 The number of decimals used when displaying a sensor state is now configurable

Originally posted by @askpatrickw in #51