fix: redo works only once

[imaachman]

• Undo works for multiple operations, but redo works only for one operation and then stops working.
• Fixed by differentiating redo operation from general editor operation, in turn preventing redo stack from getting cleared.

This PR fixes #634

[imaachman]

@LucasXu0 Since this issue affects the core editor experience and has been open since 2023, can you please take a look? I checked whether the the main Appflowy app is affected by it, and I'm afraid it does. You cannot redo on the Appflowy app. So, I request you to review this PR and merge it if it's correctly implemented.

[LucasXu0]

@imaachman Please fix the lint issues and failed tests.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.32%. Comparing base (955db55) to head (a452ac9).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1183      +/-   ##
==========================================
+ Coverage   72.27%   72.32%   +0.04%     
==========================================
  Files         324      324              
  Lines       15854    15857       +3     
==========================================
+ Hits        11459    11468       +9     
+ Misses       4395     4389       -6     

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[imaachman]

@LucasXu0, I have fixed the lint issues and failed tests. Thanks!