chore(web): fix some bugs around feature selection functionality

[keiya01]

Overview

Fix bugs around feature selection.

What I've done

• Fix selection indicator to hide in correct step
• Fix pickManyFromViewport
• Fix property conversion for each feature.

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 #736 (1b85eb7) into main (d4127b7) will decrease coverage by 0.01%.
The diff coverage is 0.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #736      +/-   ##
==========================================
- Coverage   26.72%   26.72%   -0.01%     
==========================================
  Files        1583     1583              
  Lines      172832   172835       +3     
  Branches     3913     3913              
==========================================
  Hits        46195    46195              
- Misses     125548   125551       +3     
  Partials     1089     1089              

Flag	Coverage Δ
web	25.07% <0.00%> (-0.01%)	⬇️
web-beta	25.07% <0.00%> (-0.01%)	⬇️
web-classic	25.07% <0.00%> (-0.01%)	⬇️
web-utils	25.07% <0.00%> (-0.01%)	⬇️

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

Files	Coverage Δ
web/src/beta/lib/core/engines/Cesium/pickMany.ts	39.54% <0.00%> (ø)
web/src/beta/lib/core/engines/Cesium/utils.ts	15.06% <0.00%> (-0.04%)	⬇️
web/src/beta/lib/core/engines/Cesium/hooks.ts	0.00% <0.00%> (ø)

... and 2 files with indirect coverage changes