[Feature Request]: MPPT sensor values non-numeric to numeric

[adis1987]

Describe your feature request

I have many MPPTs connected to my solar panels and read the values ​​from them. When there is no sun, all MPPTs are turned off and you can't read any value from them of course. Nothing strange. In HA, their status becomes "unknown" and all sensor values ​​are non-numeric. I use modern-circular-gauge to present interesting parameters but when the value is non-numeric, there are problems, errors are displayed.

My wish would be that if MPPT is "unknown", set the value to numeric "0" instead on all sensors. Diagnostics can be as they are since they are not numeric anyway.

Proper usage

• I confirm that this is not a bug report or support request
• I confirm that this feature request is within the stated scope of the integration