Adds 'LegacyModuleImplementsAlter' to smart_date_module_implements_alter and...

tolstoydotcomrequested to merge
issue/smart_date-3619104:3619104-modernize-smart-dates into 4.3.x

Adds 'LegacyModuleImplementsAlter' to smart_date_module_implements_alter and adds Order to the hook_tokens attribute.

Closes #3619104

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