You can add moveDisabled and resizeDisabled properties to the event data object. This will forbid drag operations but the onEventClick event handler will still be fired for such events:
dp.events.list.push({
start: "2021-01-26T00:00:00",
end: "2021-01-28T00:00:00",
id: 1,
resource: "A",
text: "static",
moveDisabled: true,
resizeDisabled: true
});