Control default state of Lock Ratio button

[theAngriestman]

Type of report

Feature request

Provide description of the new feature

Is there a way to set default state to "off" for "Lock Ratio" button

https://prnt.sc/PO7Tj9ADPvjU

[Comandeer]

There is no way to do it currently (the only way that I can think of is to modify the dialog on the fly via dialogDefinition event; but I'm not sure if it would work).

Probably the easiest solution would be to introduce a new config variable for it, e.g. image2_defaultLockRatio.

[CKEditorBot]

Closed in https://github.com/ckeditor/ckeditor4/pull/5303