After reset pin 13 is configured as an output

On the Uno R4 Minima and Uno R4 WiFi, pin 13 is made an output after reset, so if you do:
```
void setup() {
Serial.begin(9600);
delay(5000);
}

void loop () {
Serial.println(digitalRead(13));
delay(1000);
}
```
and apply 5V to the pin (via a resistor for safety), you still get 0.

The usual Arduino convention is that all digital pins are inputs after reset, and to make a pin an output you have to call `pinMode(13, OUTPUT)`, for example. As far as I know no other Arduino board does this.

The way it is currently working is undesirable, because you might have pin 13 connected to a voltage input; an accidental reset could then cause excessive dissipation in the output driver.

Note: Originally posted on the Early Access Program forum, but still an issue.

Start at the Uno R4 Minima and Uno R4 WiFi reset initialization, and trace how pin 13 is configured before setup() runs. Compare that path with the expected digitalRead(13) behavior after reset; done when pin 13 remains an input until pinMode(13, OUTPUT) is called.

Written by the indexing model from the issue text.