[BUG] Field is marked as dirty if checkOnInit is set to true

[tbydza]

If checkOnInit option of field() function is set to true, the initial validation immediately sets dirty flag to true.
The field is then marked as dirty without any user input or without manually setting a value.

Demo for demonstration: REPL demo

<script>
  import { form, field } from 'svelte-forms';
  import { required } from 'svelte-forms/validators';

  const input1 = field('input1', '', [required()], {checkOnInit: false});
  const input2 = field('input2', '', [required()], {checkOnInit: true});

  input2.subscribe(console.log)
</script>


<section>
  checkOnInit: false
  <input type="text" bind:value={$input1.value}/>
  dirty: {$input1.dirty}
  <br>
  checkOnInit: true
  <input type="text" bind:value={$input2.value}/>
  dirty: {$input2.dirty}
</section>