…extProvider (xepozz)

This PR was submitted for the master branch but it was merged into the 4.3 branch instead.

Discussion
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[VarDumper] Fix "Undefined index: argv" when using CliContextProvider

| Q             | A
| ------------- | ---
| Branch?       | 4.1, 4.2, 4.3, 4.4 or 5.0<!-- see below -->
| Bug fix?      | yes
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tickets       | Fix #35084
| License       | MIT
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Commits
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340bb14 Fixed #35084

* 4.3:
  Fixed #35084
  Add missing use statement
  [HttpClient] fix scheduling pending NativeResponse
  do not overwrite variable value
  [Profiler] wording
  Use spaces correctly to display options in DebugCommand
  X-Accel Nginx URL updated
  ticket-30197 [Validator] Add the missing translations for the Chinese (Taiwan) ("zh_TW") locale
  Fixed test added in #35022
  Use locale_parse for computing fallback locales
  [Console] Fix filtering out identical alternatives when there is a command loader

* 5.0: (24 commits)
  Removing unused variable
  Fixed #35084
  Add missing use statement
  [HttpClient] fix scheduling pending NativeResponse
  do not overwrite variable value
  [Profiler] wording
  Use spaces correctly to display options in DebugCommand
  Add supported schemes doc blocks type
  X-Accel Nginx URL updated
  ticket-30197 [Validator] Add the missing translations for the Chinese (Taiwan) ("zh_TW") locale
  Fixed test added in #35022
  Use locale_parse for computing fallback locales
  [Console] Fix filtering out identical alternatives when there is a command loader
  [String][UnicodeString] Remove unneeded flag in chunk regex pattern
  add note about HTTP status code change
  Migrate server:log command away from WebServerBundle
  [DependencyInjection][CheckTypeDeclarationsPass] Handle \Closure for callable
  [Security] Fix missing defaults for auto-migrating encoders
  bumped Symfony version to 5.0.3
  updated VERSION for 5.0.2
  ...