Before this commit:
When using shift+enter to move to a new line, now applying bold, italics,
underline, etc and then trying to add a color to both lines would result in
lines merging.
After this commit:
Now when the both lines are bold and then applying a color to both the lines
would no longer merge.
closesodoo/odoo#119701
Task: 3269922
X-original-commit: 0473dbd0090dd7b2fb1ff59a83a38df941303681
Signed-off-by: David Monjoie (dmo) <dmo@odoo.com>