Looker Studio: Issue when downloading with filters applied in Embedded Views using download button

[arunsimhateachm]

Issue Description: 

We are passing Datasource Parameters as Report URL parameters  to the embedded report, ensuring that the data presented matches the intended context. When we apply filters to the embedded report and download using the provided download button (report action button), the downloaded pdf generated does not use the report url parameters thus breaking the report.

We observed that reportState is missing when filters are applied this is causing our issue since Datasource Parameters  were not passed

Below is the payload of the request (https://lookerstudio.google.com/embed/getPdf?appVersion=20231011_01050105) when using the download report action button.

Without filters applied:

With filters applied:

[angelnar87]

I've noticed this behavior as well. URL parameters don't make it into the request payload. The weird issue is that if you use a textinput parameter, that works just fine