Rename data-slate-editor to not interfere with data-gramm

[koralarts]

Rename data-slate-editor to data-slate-react-editor because it inteferes with the data-gramm attribute which should disable the Grammarly extension

Description
When the Grammarly extension is installed, it does not get disabled even if data-gramm is set to false.

Issue
Fixes: #4124

Example

Default:

When data-gramm={undefined}:

Context
The issue stems from data-slate-editor which seems to interfere with Grammarly's logic to determine whether the extension is enabled or disabled for an editor.

Checks

• The new code matches the existing patterns and styles.
• The tests pass with yarn test.
• The linter passes with yarn lint. (Fix errors with yarn fix.)
• The relevant examples still work. (Run examples with yarn start.)

[clauderic]

@koralarts it sounds like the developers at Grammarly intentionally added data-slate-editor to a list of elements where the extension should not be applied, presumably because of issues at the time (which may or may not still be relevant today).

Based on that, I don't think renaming data-slate-editor to data-slate-react-editor is the right solution. Rather, you should try to get in touch with the development team at Grammarly to inquire about why they made that decision.

[koralarts]

@clauderic Ok. I'll contact them. Thanks.

[ianstormtaylor]

@koralarts do you have an update here?

[koralarts]

@ianstormtaylor No update yet.