text: Title: MultiselectField is not working (with xlsx format)
  Body: **Describe the bug**
  In our Django project, we have a model with Multiselectfield, when we import an export from this model, we see that these fields are not loaded.
  https://pypi.org/project/django-multiselectfield/
  
  **To Reproduce**
  1. Create a model with a MultiSelectField. (for example:
  ```python
  class SampleStudent:
      name= models.CharField(max_length=128, null=True, blank=True)
      countries = MultiSelectField(
          choices=COUNTRY_CODE_CHOICES,
          null=True,
          blank=True
      )
  ```
  2. Generate a few random rows.
  3. export as xlsx
  4. try to import related file
  
  **Versions (please complete the following information):**
   - Django Import Export: 4.2.0
   - Python 3.11
   - Django 4.2.13
  
  **Expected behavior**
  What should happen is that MultiSelectField should be exported correctly and imported correctly.