Pretty JSON view escapes Unicode characters

## Description

When JSON is displayed in the **Pretty** view, non-ASCII characters are shown as Unicode escape sequences.

For example, Danish characters such as `Æ`, `Ø`, and `Å` are displayed as `\u00C6`, `\u00D8`, and `\u00C5`.

When switching to the **Raw** view, the same characters are displayed correctly.

## Steps to Reproduce

1. Open a workflow or workflow execution containing JSON with non-ASCII characters, for example Danish characters such as `Æ`, `Ø`, or `Å`.
2. Open the JSON viewer.
3. Select the **Pretty** view.
4. Observe that the characters are displayed as Unicode escape sequences, for example `\u00C6`.
5. Switch to the **Raw** view.
6. Observe that the same characters are displayed correctly.

**Reproduction Rate:** Every time.

## Expected Behavior

The **Pretty** view should display Unicode characters as readable text, the same way as the **Raw** view.

Example:

```json
{
"name": "Æ"
}
```

## Actual Behavior

The **Pretty** view displays Unicode characters as escaped Unicode values.

Example:

```json
{
"name": "\u00C6"
}
```

## Additional Context

This makes JSON containing non-ASCII characters harder to read in the **Pretty** view, even though the underlying JSON data is correct and displayed properly in the **Raw** view.