**Reproduce on main:**
- Run a DAG
- Rename the DAG
- Wait for dag file processor to remove the deleted DAG and add the new one. (Old Dag should not appear on the home page anymore)
- Go to the Browse DAGRUN page.
- Click on a DagRun of the deleted DAG, as if you want to see the 'details/grid' of that old dag run

More info and screenshots here:
https://github.com/notifications#discussioncomment-6898570

![image](https://github.com/apache/airflow/assets/14861206/7af81643-6278-4d90-a20f-6aa7b259ce59)



"""Format hidden fields."""
        key = self.get("key")
        val = self.get("val")
        if secrets_masker.should_hide_value_for_key(key):
            return Markup("*" * 8)
        if val:
            return val
        else:
            return Markup('<span class="label label-danger">Invalid</span>')
    formatters_columns = {
        "val": hidden_field_formatter,
    }
    validators_columns = {"key": [validators.DataRequired()]}
    def prefill_form(self, form, request_id):