Bug 32253: Load all CodeMirror lines initially when using advanced editor

Bug 32253: Load all CodeMirror lines initially when using advanced editor

To test:
1. Have advanced editor turned on.
2. Load a record with many lines and see that not all the lines appear until you click on the visible ones.
3. Apply patch and try again
4. All lines should load.

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit 827df32798cd8046d62cb6630fd33395d78fb3ef)
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>