feat: [#174712071] Update and sync preferred language

[Undermaken]

⚠️ THIS PR DEPENDS on #2184

Short description

This PR does some stuffs about language

1. check if the loaded profile has a preferred language
2. if the profile has not a preferred_language it will be updated with the language stored in the store or with the device language if any value is in the store
3. sync the store with the value set in the profile

To do the above steps, this PR introduces a watcher on load profile: when the profile is successfully loaded then a saga will be executed

[pagopa-github-bot]

Affected stories

• 🌟 #174712071: Controllare che il profilo abbia una lingua preferita impostata

Generated by 🚫 dangerJS against 5d78e47

[codecov-commenter]

Codecov Report

Merging #2186 into master will decrease coverage by 0.01%.
The diff coverage is 40.00%.

@@            Coverage Diff             @@
##           master    #2186      +/-   ##
==========================================
- Coverage   47.03%   47.01%   -0.02%     
==========================================
  Files         485      485              
  Lines       14554    14574      +20     
  Branches     2981     2988       +7     
==========================================
+ Hits         6845     6852       +7     
- Misses       7667     7680      +13     
  Partials       42       42              

Impacted Files	Coverage Δ
ts/sagas/profile.ts	28.33% <21.05%> (-6.56%)	⬇️
ts/sagas/startup.ts	58.77% <100.00%> (+1.52%)	⬆️
ts/utils/locale.ts	100.00% <100.00%> (ø)

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