Description

If you do navigation preloading or similar you may already have the data for the task at component creation time. Then it would make sense to be able to either set that data manually at Task creation time or using some attributes.

The simplest but probably also most unclean change would be to make _value

public and name it value

Steps to Reproduce

import {Task} from '@lit-labs/task';

this._apiTask = new Task(
  this,
  taskFunction,
  () => /** @type {[URLSearchParams]} */ ([this.history.url.searchParams])
);
 if (this.initial !== undefined) {
  this._apiTask.status = TaskStatus.COMPLETE;
  // TODO FIXME don't use this private attribute that got minified
  this._apiTask.P = this.initial;
}