Before this commit:
`destroyLinkTools` function sets the selection to entire link. However, in
case where a website snippet had a structure like
```html
<a>
<div>
<i class=fa-xxx></i>
<div>
<h4>Text</h4>
<font>Text</font>
</div>
</div>
</a>
```
selecting the complete link caused problem. The toolbar couldn't be
updated correctly, also one could not change the a tag of a single element
within the link.
After this commit:
`destroyLinkTools` selects the `anchorNode` and the `focusnode` of the
selection instead of entire link.
task-3245819
closesodoo/odoo#151752
X-original-commit: e88ffecc4bdb0480fc1d47af14558f28f72a665d
Signed-off-by: Antoine Guenet (age) <age@odoo.com>