how to check my last page is empty or not ? insert Html on it if last page empty in word

Question

I want if my last page is empty then insert Html on it if last page is not empty then create a new page and insert my html on it. this is my code this is working some time but sometimes it is not working when I have any table on last page.

async function PartTitle(event) {
    try {
        await Word.run(async (context) => {
            const body = context.document.body;

            // Check if the last paragraph contains text
            const paragraphs = body.paragraphs;
            const lastParagraph = paragraphs.getLast();
            lastParagraph.load("text");

            await context.sync();

            if (lastParagraph.text !== "") {
                body.insertBreak(Word.BreakType.page, Word.InsertLocation.end);
            }

            // Insert the custom structure at the end of the document
            const updatedLastParagraph = paragraphs.getLast();
            const range = updatedLastParagraph.getRange();
            const contentControl = range.insertContentControl();
            contentControl.tag = "PartTitle-" + UUID();
            // Set the appearance of the content control to "hidden" or "boundingBox"
            contentControl.appearance = Word.ContentControlAppearance.hidden;
            contentControl.insertHtml(
                `<h1 style='margin-top:0in;margin-right:0in;margin-bottom:12.0pt;margin-left:0in;text-align:center;font-size:21px;font-family:"Calibri",sans-serif;color:black;'>Part Title</h1>
<h4 style='margin-top:0in;margin-right:0in;margin-bottom:12.0pt;margin-left:0in;font-size:21px;font-family:"Calibri",sans-serif;color:black;'>&nbsp;</h4><br />`,
                Word.InsertLocation.end);

            await context.sync();
        });
        event.completed();

    } catch (error) {
        console.log(error);
        ErrorMesage();
    }
};