Remove h1 from Editor formats in the Full HTML (Rich editor) Text format

Thanks, Firas for reporting and patching

If we do have:

status: false

or

status: true

Make sure that CKEditor Entity Embed works.

Needs more testing before we commit.

Agreed, it's a better fix for this issue.
only to support the simple text format.
and check for notices. isset() , !empty()

I may do this as a string replace for h1; to empty string.
We could add a HEADER_ONE token to replace with h1 in case some users insisted on having the h1

Thank you :)