[ParameterValidator] Ignore cache-busting param [#1701]

[JasonGhent]

This PR addresses #1701

Describe the bug
Some readers implement cache-busting logic in the form of appending a &_= query parameter to sequential requests. Appropriately, this is interpreted by the BridgeAbstract as a parameter to pass to the bridge. Unfortunately, this breaks some bridges.

To Reproduce
Steps to reproduce the behavior:

• Append &_=123 to any bridge request.
• See error:

 Exception: Invalid parameters value(s): _ in /app/lib/error.php:24\nStack trace:\n#0 /app/lib/error.php(33): returnError(
)\n#1 /app/lib/BridgeAbstract.php(222): returnClientError()\n#2 /app/actions/DisplayAction.php(133): BridgeAbstract->setDatas()\n#3 /app/index.php(38): DisplayAction->execute()\n#4 {main}

Expected behavior
The bridge abstract should ignore unexpected parameters. Or strip cache-busting earlier in the execution process.

Desktop (please complete the following information):

    OS: MacOS
    Browser Firefox, Chrome, Safari
    Version latest

[em92]

gj @JasonGhent !