* Define HTMLPurifier_AttrTransform_SafeParam::$wmode
This fixes a PHP 8.2 deprecation.
* Define HTMLPurifier_DefinitionCache_DecoratorHarness::$cache
This fixes a PHP 8.2 deprecation.
* Define HTMLPurifier_DefinitionCache_DecoratorHarness::$mock
This fixes a PHP 8.2 deprecation.
* Define HTMLPurifier_DefinitionCache_DecoratorHarness::$def
This fixes a PHP 8.2 deprecation.
* Define HTMLPurifier_EntityParserTest::$_entity_lookup
This fixes a PHP 8.2 deprecation.
When specifying source material for <object> tags, you must use
data inside the object tag as well as specify movie in a param.
If you specify a src (which is the appropriate markup for <embed>)
we now convert and fill in the other attributes appropriately.
Also, fix a PHP warning in Generator code.
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>