Fixed #7211 - editor losing focus in Tab Panel and fix default value not set properly

[addeeandra]

I'm checking for losing focus occurs when the same ref used by two different editors (#7211 ). The focus issue doesn't occur in 4.3.0-rc.1, but occurs in 4.2.5 release. But the latest release (4.3.0-rc.1) had a defect below.

Defect Fixes

Default value doesn't set properly because the setText/Contents not being called when value is available. After some digging into it, it was updated because of security vulnerability related to HTML injection.

Previously, the Editor use dangerouslyPasteHTML (here) which cause vulnerability, and then being replaced with convert. But the convert function ONLY sanitize the HTML and resulting a delta which doesn't set editor's content, so I fix it: after convert-ing the HTML, call setContents to the Editor.

In master branch: https://github.com/user-attachments/assets/c5460fb2-6c3d-44dc-b153-ecdcb85d1c20

Fixed in this PR: https://github.com/user-attachments/assets/2154fb70-3318-4d76-9506-0c2fb89979c1

[vercel]

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