I'm not sure you understand how wheels work. Spokes an only pull, and rarely experience tension (increase) spikes of significant size because that would require the rim to move outward. When there's a load on the rim, whether the weight of the rider, or from a bump, the rim moves inward. That slackens the spoke in the immediate area, causing a reduction in the forces toward that direction resulting in a net force in the opposite direction.

There will be a slight increase in tension, usually to either side of the point of rim stress, since as the rim deflects inward, it pushes out to the sides causing those areas to move either around the circumference, or bulge outward. These are much smaller deflections and changes in tension compared to the key change which is the loss of tension where the rim flexes inward.

What interlacing does, is increase the distance the rim can deflect before the most affected spokes goes slack. As one of the crossed spokes slackens it allows it's crossed partner to straighten increasing the slacker spoke's distance from rim to hub, partly (or fully) making up for the fact that the rim is moved inward.

You can document this for yourself with a Dry Marker, a rod, and some rubber bands. Attach the rod to the fork so it extends below the hub beyond the place where spokes cross. Attach the marker to the rod so the tip is as close as possible to a cross with the outside spoke at 6 o'clock.

With the bike vertical press down suddenly and firmly on the handlebars as if using them to vault over the bike. Look at the spokes and you'll see the mark on a spoke because the cross moved out and touched the marker.

If you have a tension meter, and repeat the experiment, you'll find that both crossed spokes experience a drop in tension when either are at a place where the rim is pushed toward the hub.