PHPMaker fix for PHP version 8

PHPMakerFix.md

Convert the following to ternary:

Find

$GLOBALS["Title"] ??= $page->Title; // Title

and replace

$GLOBALS["Title"] = $GLOBALS["Title"] ?: $page->Title;

Find

$GLOBALS["Conn"] ??= $this->getConnection();

and replace

$GLOBALS["Conn"] = $GLOBALS["Conn"] ?: $this->getConnection();