chore(web): fix story page bugs

[mkumbobeaty]

Overview

What I've done

• Fix double click the page name to edit page name
• Fix spacing/gap between title and the first block

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 #826 (2e1c112) into main (91a8215) will decrease coverage by 0.01%.
The diff coverage is 0.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #826      +/-   ##
==========================================
- Coverage   25.69%   25.69%   -0.01%     
==========================================
  Files        1637     1637              
  Lines      180174   180169       -5     
  Branches     3913     3912       -1     
==========================================
- Hits        46290    46287       -3     
+ Misses     132795   132793       -2     
  Partials     1089     1089              

Flag	Coverage Δ
web	23.91% <0.00%> (-0.01%)	⬇️
web-beta	23.91% <0.00%> (-0.01%)	⬇️
web-classic	23.91% <0.00%> (-0.01%)	⬇️
web-utils	23.91% <0.00%> (-0.01%)	⬇️

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

Files	Coverage Δ
.../Editor/tabs/story/LeftPanel/ContentPage/index.tsx	0.00% <ø> (ø)
...res/Editor/tabs/map/LeftPanel/Layers/LayerItem.tsx	0.00% <0.00%> (ø)
...itor/tabs/story/LeftPanel/ContentPage/PageItem.tsx	0.00% <0.00%> (ø)
...features/Editor/DataSourceManager/Common/index.tsx	0.00% <0.00%> (ø)
web/src/beta/lib/core/StoryPanel/Page/index.tsx	0.00% <0.00%> (ø)

... and 2 files with indirect coverage changes