Consecutive duplicated words check ignores the presence of placeholders

### Describe the issue

I am translating a string that includes placeholders for singular/plural forms. In my target language (IT), one of the three string forms (one/many/other) would read as:

> Italian, Many (1000000, 2000000)
`Download di %d di episodi in corso.`

When the consecutive duplicated words check is enforced, the word `di` fails the check, even though a placeholder is present in between the two instances (which makes them not actually consecutive).

### I already tried

- [x] I've read and searched [the documentation](https://docs.weblate.org/).
- [x] I've searched for similar filed issues in this repository.

### Steps to reproduce the behavior

1. Enforce the consecutive duplicated words check
2. Repeat the same word on both sides of a placeholder (e.g. for singular/plural) within a string
3. The check fails

### Expected behavior

The check should not ignore the presence of a placeholder in between the consecutive duplicated words.

### Screenshots

_No response_

### Exception traceback

```pytb

```

### How do you run Weblate?

weblate.org service

### Weblate versions

_No response_

### Weblate deploy checks

```shell

```

### Additional context

_No response_