chore: bump version 1.4.4

[LucasXu0]

1.4.4

• feat: support customizing error block by @LucasXu0 in (#524)
• feat: export JSON in mobile and update mobile_example.json by @hyj1204 in (#515)
• feat: add regex and case sensitive to FindReplaceMenu by @sun-jiao in (#480)
• feat: customize desktop toolbar style by @q200892907 in (#519)
• feat: support RTL in toolbar by @1akhanBaheti in (#496)
• feat: optimize the find and replace logic by @LucasXu0 in (#510)
• feat: enable shift+press for selection range by @Xazin in (#512)
• feat: image block revamp by @LucasXu0 in (#516)
• fix: undo failed in a nested list in a special case by @LucasXu0 in (#503)
• fix: the cursor will flicker one frame to its previous position by @LucasXu0 in (#506)
• fix: delete the divider on mobile will raise an error by @LucasXu0 in (#508)
• fix: unable to update selection sometimes when the editor lost focus by @LucasXu0 in (#509)
• fix: search integration issues by @LucasXu0 in (#511)
• fix: image block revamp issues by @LucasXu0 in (#517)
• fix: impossible to click on any sub-items if the top level item is off-screen by @LucasXu0 in (#522)
• fix: the selection should be clear if header or footer is focusing by @LucasXu0 in (#525)
• fix: the selection handles remain on the screen after cutting the text (#526)

[codecov]

Codecov Report

Attention: 25 lines in your changes are missing coverage. Please review.

Comparison is base (8bfd779) 80.32% compared to head (e1d7f93) 80.17%.
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #527      +/-   ##
==========================================
- Coverage   80.32%   80.17%   -0.16%     
==========================================
  Files         281      282       +1     
  Lines       11948    11978      +30     
==========================================
+ Hits         9597     9603       +6     
- Misses       2351     2375      +24     

Files	Coverage Δ
...b/src/editor/toolbar/desktop/floating_toolbar.dart	84.46% <100.00%> (+0.46%)	⬆️
...ditor/toolbar/desktop/floating_toolbar_widget.dart	97.14% <100.00%> (+0.26%)	⬆️
...lbar/desktop/items/bulleted_list_toolbar_item.dart	77.77% <100.00%> (ø)
...ktop/items/color/highlight_color_toolbar_item.dart	62.50% <100.00%> (ø)
...r/desktop/items/color/text_color_toolbar_item.dart	58.82% <100.00%> (ø)
...or/toolbar/desktop/items/format_toolbar_items.dart	95.65% <100.00%> (ø)
...r/toolbar/desktop/items/heading_toolbar_items.dart	80.76% <100.00%> (ø)
...editor/toolbar/desktop/items/icon_item_widget.dart	95.00% <100.00%> (ø)
.../toolbar/desktop/items/link/link_toolbar_item.dart	90.32% <100.00%> (ø)
...lbar/desktop/items/numbered_list_toolbar_item.dart	77.77% <100.00%> (ø)
... and 9 more

... and 1 file with indirect coverage changes

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