Ensure render of I18nProvider in async scenarios

[Bertg]

This is related to #834

This PR solves 2 issues:

• Making sure the component gets re-rendered when needed
• Provide a warning to the developer

Some more thoughts about this PR and problem:

• It is perfectly possible for the warning to appear even if the component will render.
• It would be better to always render. We can add a warning to the developer that only defaults will be rendered. This requires the developer to make sure a language is activated before they render the component. We could even choose to completely throw if i18n is not activated yet, unless the developer set a prop indicating they are OK with defaults.
• forceRenderOnLocaleChange should be separated from dontRenderIfNoLocaleIsActivated
• ideally there should be a i18n.on("activated" which also triggers when first observed (if already triggered before). That way the extra call to setRenderKey in the effect is never needed.

[vercel]

@Bertg is attempting to deploy a commit to the LinguiJS Team on Vercel.

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[codecov]

Codecov Report

Merging #839 (934639d) into main (a61c57a) will increase coverage by 0.02%.
The diff coverage is 91.66%.

@@            Coverage Diff             @@
##             main     #839      +/-   ##
==========================================
+ Coverage   84.25%   84.27%   +0.02%     
==========================================
  Files          38       38              
  Lines        1251     1259       +8     
  Branches      332      334       +2     
==========================================
+ Hits         1054     1061       +7     
  Misses        117      117              
- Partials       80       81       +1     

Impacted Files	Coverage Δ
packages/react/src/I18nProvider.tsx	83.87% <91.66%> (+1.26%)	⬆️

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[tricoder42]

Perfect, thanks!

ideally there should be a i18n.on("activated"

Let's try it as it is and figure out how to improve it later. I guess we could add a signal activated or loaded which would be triggered after message catalog for active locale is loaded and available.

[Bertg]

Quick question... may I be added to the contributor list? :)

[tricoder42]

@Bertg I don't think we have an explicit list of contributors 🤔 The contributors section in README is generated automatically from repository contributors. I guess it's just cached and you should appear there in few days.

And if I haven't said it explicitly, thank you for your help! I really appreaciate everyone who's willing to spend their free time contributing to this project 🙏

[Bertg]

You're welcome :)

Actually felt kind of embarrassed asking, but this is a project I would be proud of having my name attached to.

[tricoder42]

Yeah, this is a valid point 👍 We could use GitHub Action to automatically generate list of contributors after each pull request. I'm gonna check it later. GitHub Actions are really powerfull 🚀