[FIX, UI] Editor size depending on parent

[jpelay]

Description

Sets the size of the editor depending on its parent, #editor, when creating it. Also changes the implementation of the resize function to change the height of the style property of the editor's dom element, this simplifies the constructor a little bit.

**Fixes #4841 and fixes #4866 (because that the buttons weren't shown was actually a fault of this) **

How to test

• Go to the slides and see that the editor is shown correctly
• Go to: http://0.0.0.0:8080/embedded/1/?lang=nl&run=true&readOnly=false&program=cHJpbnQgaGFsbG8gd2VyZWxkIQ==

And check that the editor takes the entire space.

[jpelay]

Hi @TiBiBa, this will change the initial size of the embedded editor, can you check that it doesn't break something on your side? And if it does, please do tell me!

[Felienne]

Solves the slides issue:

Leaving the final ok to @TiBiBa so he can check the embedded editor!

[TiBiBa]

Will check this!

[mergify]

Thank you for contributing! Your pull request is now going on the merge train (choo choo! Do not click update from main anymore, and be sure to allow changes to be pushed to your fork).

[mergify]

Thank you for contributing! Your pull request is now going on the merge train (choo choo! Do not click update from main anymore, and be sure to allow changes to be pushed to your fork).

[mergify]

Thank you for contributing! Your pull request is now going on the merge train (choo choo! Do not click update from main anymore, and be sure to allow changes to be pushed to your fork).