🐛(frontend) fix toolbar not activated when reader

When user was a reader of the document, the toolbar
of the BlockNote editor was not activated,
making it impossible to download resources like images.
We add the toolbar even in viewer mode.
We block as well automatic document mutation
from custom blocks when the editor is in viewer mode
to avoid unwanted modifications.

CHANGELOG.md

@@ -6,10 +6,17 @@ and this project adheres to
 
 ## [Unreleased]
 
+### Added
+
+- ✨ Add comments feature to the editor #1330
+- ✨(backend) Comments on text editor #1330
+
 ### Fixed
 
 - ♿(frontend) improve accessibility:
   - ♿(frontend) improve share modal button accessibility #1626
+- 🐛(frontend) fix toolbar not activated when reader #1640
+- 🐛(frontend) preserve left panel width on window resize #1588
 
 ## [3.10.0] - 2025-11-18
 
@@ -40,7 +47,6 @@ and this project adheres to
 ### Security
 
 - mitigate role escalation in the ask_for_access viewset #1580
-- 🐛(frontend) preserve left panel width on window resize #1588
 
 ### Removed
 
@@ -54,7 +60,6 @@ and this project adheres to
 - ✨(frontend) create skeleton component for DocEditor #1491
 - ✨(frontend) add an EmojiPicker in the document tree and title #1381
 - ✨(frontend) ajustable left panel #1456
-- ✨ Add comments feature to the editor #1330
 
 ### Changed
 
@@ -183,7 +188,6 @@ and this project adheres to
 
 ### Added
 
-- ✨(backend) Comments on text editor #1309
 - 👷(CI) add bundle size check job #1268
 - ✨(frontend) use title first emoji as doc icon in tree #1289