Multiple many to many relationships between the same tables will use the same through table silently

Describe the bug
Two many to many fields to the same related object will use the same through table.

To Reproduce

class User(Model):
    username = fields.TextField()
    
class MergeRequest(Model):
    assignees = fields.ManyToManyField(
        "User", related_name="merge_requests_assignee", null=True
    )
    reviewers = fields.ManyToManyField(
        "User", related_name="merge_requests_reviewer", null=True
    )

Expected behavior
I would expect an error demanding through to be defined or the field name to be included in the through table name.

Start by running the supplied User and MergeRequest model reproduction and verify whether assignees and reviewers use the same through table. Determine which expected behavior is intended—requiring an explicit through value or including the field name in the generated table name—and consider the corresponding regression coverage. Done means the collision is no longer silent.