chore(web): various bug fixes and refactoring

[KaWaite]

Overview

Sorry this is a batch bug fix, refactor, code/ui/ux improvement PR. I know they should be separate PRs. Bad me. Bad.

What I've done

What I haven't done

How I tested

Which point I want you to review particularly

Memo

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[codecov]

Codecov Report

Merging #713 (ee945ef) into main (c4cc874) will decrease coverage by 1.44%.
Report is 1 commits behind head on main.
The diff coverage is 10.11%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #713      +/-   ##
==========================================
- Coverage   28.18%   26.75%   -1.44%     
==========================================
  Files        1571     1567       -4     
  Lines      171841   171043     -798     
  Branches     3825     3894      +69     
==========================================
- Hits        48440    45769    -2671     
- Misses     122312   124185    +1873     
  Partials     1089     1089              

Flag	Coverage Δ
web	25.06% <10.11%> (-1.79%)	⬇️
web-beta	25.06% <10.11%> (-1.79%)	⬇️
web-classic	25.06% <10.11%> (-1.79%)	⬇️
web-utils	25.06% <10.11%> (-1.79%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
.../beta/features/Editor/tabs/map/LeftPanel/index.tsx	0.00% <ø> (ø)
web/src/services/api/storytellingApi/blocks.ts	30.73% <100.00%> (+3.46%)	⬆️
web/src/beta/lib/core/StoryPanel/Block/index.tsx	0.00% <0.00%> (ø)
...rc/beta/lib/core/StoryPanel/PanelContent/index.tsx	0.00% <0.00%> (ø)
.../src/beta/lib/core/StoryPanel/Page/BlockAddBar.tsx	0.00% <0.00%> (ø)
web/src/services/api/widgetsApi/utils.ts	42.35% <54.54%> (+2.35%)	⬆️
...res/Editor/tabs/map/LeftPanel/GroupField/index.tsx	0.00% <0.00%> (ø)
...rc/beta/lib/core/StoryPanel/Block/builtin/index.ts	0.00% <0.00%> (-95.66%)	⬇️
...eatures/Editor/tabs/map/LeftPanel/Layers/index.tsx	0.00% <0.00%> (ø)
...src/beta/lib/core/StoryPanel/PanelContent/hooks.ts	0.00% <0.00%> (ø)
... and 7 more

... and 70 files with indirect coverage changes