If you want to hide the parameter UI, skip to a certain page or, as in my case, need to force the "target=_blank |_self | _parent | _top" attribute of Action URLs in your report, simply add the appropriate SSRS Qs param to the URL of your target report.
http://myrshost/reportserver?/Sales&rc:FindString=Mountain-400
http://myrshost/ReportServer?/myreport&rs:Format=PDF
http://myrshost/ReportServer?/myreport&rs:LinkTarget=_top
In my case, I was running into a scenario where my report link targets were being suppressed in FireFox and IE due to server restrictions on the content surrounding my report view. Simply applying rs:LinkTarget=_top to the report URL query string forced the necessary target=_top to override the undesired behavior. Because this took me longer than I'd think it should take to find the resolution, I have shared this tidbit in the hopes it helps save time for another developer at some point.
Reference:
https://www.w3schools.com/tags/att_a_target.asp
https://docs.microsoft.com/en-us/sql/reporting-services/url-access-parameter-reference
