Header attribute sets header for entire op before it, not just for last line as it should.

[djhuistra]

Issue identified: When you add a header in the middle of a section, it seems to make all the text before that header 'header sized'.

This submission

{
    "team": 1,
    "section": 1,
    "last_modified": 1711305676108,
    "text": {
        "ops": [
            {
                "insert": "I love soufflé dessert carrot cake carrot cake I love. Icing gingerbread marzipan gummies cake biscuit cotton candy. Chocolate apple pie biscuit soufflé tootsie roll danish. I love sweet gingerbread bonbon bear claw bonbon jelly beans gummies marshmallow. I love chocolate sugar plum cupcake cotton candy gummies bonbon. Gummi bears muffin I love caramels carrot cake halvah. I love cookie chupa chups tiramisu ice cream. Tart chocolate tootsie roll cheesecake croissant fruitcake icing. Caramels sweet roll marshmallow I love sweet I love sweet roll dessert pastry. Fruitcake jelly beans powder marshmallow dessert. Sweet lollipop pudding cake tiramisu. Chocolate bar dessert cookie chocolate I love.\n\nNobody said it was easy!"
            },
            {
                "attributes": {
                    "header": 2
                },
                "insert": "\n"
            },
            {
                "insert": "Sesame snaps sweet gingerbread tart candy marzipan jujubes brownie lollipop. Marshmallow topping cheesecake macaroon gummi bears ice cream caramels dragée. Apple pie gingerbread I love soufflé soufflé ice cream pie. Cake chocolate bar macaroon oat cake wafer. Danish sugar plum cheesecake fruitcake cupcake tiramisu chocolate cake cake macaroon. Shortbread marzipan candy muffin apple pie sesame snaps bear claw cookie. Carrot cake danish danish gummi bears I love dragée. Jelly-o pudding chocolate fruitcake cake apple pie. Chocolate dessert tiramisu liquorice gingerbread liquorice cheesecake liquorice. I love lemon drops tootsie roll halvah pastry jelly. Dragée tart sugar plum cookie jujubes candy macaroon caramels. I love jelly tart danish I love.\n\n"
            },
            {
                "insert": {
                    "image": "http://localhost:6969/api/image/ad92753a-c62a-4c8f-80c3-c3630b44edd9.png"
                }
            },
            {
                "insert": "\n"
            }
        ]
    }
}

Results in this PDF:

[Orange-Murker]

This has now been fixed by: 37573e4

See the result below: