Enable a question description inline editor within a design surface

[JaneSjs]

T19476 - Description visibility like page and form
https://surveyjs.answerdesk.io/internal/ticket/details/T19476

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Content editors can enter a survey and page description within a design surface:

However, question description inline editors are not available:

Please consider adding question description placeholders so that users can enter descriptions without activating a properties tab.

[JaneSjs]

To activate an in-place editor for question descriptions, specify a description placeholder as follows:

import { Serializer } from "survey-core";

Serializer.getProperty('question', 'description').placeholder = "Description";

View Demo