Issue #3349659: Support translatable media entities

modules/pagedesigner_audio/resources/js/traits.js

...edesigner_audio/src/Plugin/pagedesigner/Handler/Audio.php

modules/pagedesigner_document/resources/js/traits.js

...ner_document/src/Plugin/pagedesigner/Handler/Document.php

modules/pagedesigner_embed/resources/js/traits.js

...edesigner_embed/src/Plugin/pagedesigner/Handler/Embed.php

...allery/src/Plugin/pagedesigner/Handler/GalleryGallery.php

modules/pagedesigner_image/resources/js/traits.js

...edesigner_image/src/Plugin/pagedesigner/Handler/Image.php

modules/pagedesigner_imageedit/resources/js/imageeditor.js

modules/pagedesigner_media/resources/js/media_trait.js

modules/pagedesigner_media/resources/js/pd_media_manager.js

...s/pagedesigner_media/src/Plugin/MediaFieldHandlerBase.php

modules/pagedesigner_svg/resources/js/traits.js

.../pagedesigner_svg/src/Plugin/pagedesigner/Handler/SVG.php

modules/pagedesigner_video/resources/js/traits.js

...edesigner_video/src/Plugin/pagedesigner/Handler/Video.php