Do not overwrite installation dir in Windows
Do not overwrite installation dir in Windows

Declare the expected default installation dir in the media files, to
either use the default directory or the one provided by the user when
installing with unattended mode in Windows.

Fix #4858.

Signed-off-by: thc202 <43af82ef30812a20fbcf38b99a6f72cdd3a89ac1@gmail.com>

gmaran23/zaproxy,gmaran23/zaproxy,gmaran23/zaproxy,kingthorin/zaproxy,kingthorin/zaproxy,psiinon/zaproxy,zaproxy/zaproxy,psiinon/zaproxy,gmaran23/zaproxy,kingthorin/zaproxy,thc202/zaproxy,gmaran23/zaproxy,thc202/zaproxy,zaproxy/zaproxy,psiinon/zaproxy,kingthorin/zaproxy,zaproxy/zaproxy,gmaran23/zaproxy,zaproxy/zaproxy,psiinon/zaproxy,zaproxy/zaproxy,thc202/zaproxy,psiinon/zaproxy,psiinon/zaproxy,psiinon/zaproxy,thc202/zaproxy,thc202/zaproxy,zaproxy/zaproxy,thc202/zaproxy,gmaran23/zaproxy,zaproxy/zaproxy,kingthorin/zaproxy,thc202/zaproxy,kingthorin/zaproxy,kingthorin/zaproxy