fix: properly managed state for country selector

[AshAman999]

What

• Country selector works properly now

Screenshot

Record_2022-05-05-23-50-24_cc729dbb1ea2c751a543590b5da9708c.mp4

Fixes bug(s)

• Fixes: Abnormal state in country selector #1757

Part of

[codecov-commenter]

Codecov Report

Merging #1758 (2d19cf2) into develop (2ea0da3) will decrease coverage by 0.51%.
The diff coverage is 0.60%.

@@            Coverage Diff             @@
##           develop   #1758      +/-   ##
==========================================
- Coverage     8.86%   8.34%   -0.52%     
==========================================
  Files          161     167       +6     
  Lines         6623    7247     +624     
==========================================
+ Hits           587     605      +18     
- Misses        6036    6642     +606     

Impacted Files	Coverage Δ
...h_app/lib/cards/category_cards/abstract_cache.dart	0.00% <0.00%> (ø)
...p/lib/cards/category_cards/asset_cache_helper.dart	0.00% <0.00%> (ø)
...p/lib/cards/category_cards/raster_async_asset.dart	0.00% <0.00%> (ø)
...oth_app/lib/cards/category_cards/raster_cache.dart	0.00% <0.00%> (ø)
..._app/lib/cards/category_cards/svg_async_asset.dart	0.00% <0.00%> (ø)
...smooth_app/lib/cards/category_cards/svg_cache.dart	0.00% <0.00%> (ø)
...t_cards/knowledge_panels/knowledge_panel_card.dart	0.00% <0.00%> (ø)
...t_cards/knowledge_panels/knowledge_panel_page.dart	0.00% <0.00%> (ø)
...knowledge_panels/knowledge_panel_summary_card.dart	0.00% <ø> (ø)
...s/knowledge_panels/knowledge_panel_table_card.dart	0.00% <0.00%> (ø)
... and 59 more

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[M123-dev]

Looks good, thanks for the quick fix @AshAman999 🎉