perf: improve unnecessary loading the globe image

[keiya01]

Overview

What I've done

I removed imageryProvider={false} props for Viewer component.
This props removes the loaded globe image. The props is used in here.
Therefore this cause unnecessary loading globe image when the Viewer component is re-rendered.

What I haven't done

How I tested

Screenshot

Which point I want you to review particularly

Memo

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[codecov]

Codecov Report

Merging #378 (0e25af8) into main (61e67ef) will increase coverage by 0.00%.
The diff coverage is n/a.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #378   +/-   ##
=======================================
  Coverage   24.53%   24.53%           
=======================================
  Files         597      597           
  Lines       62873    62871    -2     
  Branches     1243     1243           
=======================================
  Hits        15428    15428           
+ Misses      47399    47397    -2     
  Partials       46       46           

Impacted Files	Coverage Δ
...nents/molecules/Visualizer/Engine/Cesium/index.tsx	0.00% <ø> (ø)
src/core/engines/Cesium/index.tsx	0.00% <ø> (ø)