view_only=false doesn't work with vnc_lite.html

[TclHttpd]

Describe the bug
vnc_lite.html issue when query parameter is set to view_only=false. Can not move the cursor acting like view_only=true. A work around is to set view_only to nothing eg view_only=

To Reproduce
Go to http://cloudtk.tcl-lang.org/view-only.html to see a live demo of the issue.

Expected behavior
view_only=false query parameter to allow controlling of the cursor.

Client (please complete the following information):

• OS: Linux64 Ubuntu
• Browser: Firefox
• Browser version: 101.0.1 (64-bit)

Server (please complete the following information):

• noVNC version: 1.3.0
• VNC server: TigerVNC
• WebSocket proxy: CloudTk

[CendioOssman]

It seems we don't check the boolean values, so setting them to anything at all will result in them being turned on. :/