♻️(vitest) Add missing types on exported

[dubzzz]

Description

In order to toggle ON the flag isolatedDeclarations and allow us to use something else than tsc to build our project (not sure we will do one day), we start to make some types more explicit on our exported symbols.

Checklist — Don't delete this checklist and make sure you do the following before opening the PR

• The name of my PR follows gitmoji specification
• My PR references one of several related issues (if any)
  • New features or breaking changes must come with an associated Issue or Discussion
  • My PR does not add any new dependency without an associated Issue or Discussion
• My PR includes bumps details, please run yarn bump and flag the impacts properly
• My PR adds relevant tests and they would have failed without my PR (when applicable)

Advanced

• Category: ♻️ Refactoring
• Impacts: None

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Sandbox	Source
@fast-check/examples	Configuration

[github-actions]

👋 A preview of the new documentation is available at: http://66b72cf1a5564dfdb32675e7--dubzzz-fast-check.netlify.app

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.73%. Comparing base (1801d1a) to head (6809edd).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5200   +/-   ##
=======================================
  Coverage   94.73%   94.73%           
=======================================
  Files         231      231           
  Lines        9320     9320           
  Branches     2731     2730    -1     
=======================================
  Hits         8829     8829           
  Misses        491      491           

Flag	Coverage Δ
unit-tests	94.73% <ø> (ø)
unit-tests-18.x-Linux	94.73% <ø> (ø)
unit-tests-20.x-Linux	94.73% <ø> (ø)
unit-tests-22.x-Linux	94.73% <ø> (ø)
unit-tests-latest-Linux	94.73% <ø> (ø)

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