Unable to publish the web content with huge data

Issue

Steps to reproduce:
1. Start Liferay DXP 7.4
2. Navigate to Web Content under Content & Data.
3. Go to structure and add three 'Rich Text' fields with repeatable. Click Save.
4. Create web content with the created structure.
5. Enter the data. Please make sure to enter the 40-50 entries in the repeatable field.
6. Try to publish the web content.

Actual Result: Web content is not publishing and showing the below WARN in the console.
```
2022-09-28 10:06:50.093 WARN [http-nio-8080-exec-10][code_jsp:159]
{code="400", msg="", uri=/o/dynamic-data-mapping-form-context-provider/}
```
Expected Result: Web content must be published with huge data.

Environment

Liferay DXP 7.4

Resolution

When adding a large amount of data to web content, it surpasses the request limit.
To overcome the issue, user must include the following property in the portal-ext.properties file.

## Upload Servlet Request
    #
    # Set the threshold size to prevent extraneous serialization of uploaded
    # data.
    #
    # Env: LIFERAY_COM_PERIOD_LIFERAY_PERIOD_PORTAL_PERIOD_KERNEL_PERIOD_UPLOAD_PERIOD__UPPERCASEF_ILE_UPPERCASEI_TEM_PERIOD_THRESHOLD_PERIOD_SIZE
    #
    com.liferay.portal.kernel.upload.FileItem.threshold.size=8048576

Additional Information

Configure the portal-ext.properties file with the above property and restart the server to see the changes.
Kindly check the behavior in the lower environment first, if everything works as expected then move to production as per your discretion if you feel comfortable with it.
LPS-163222