Fix extra-prog-path propagation in the codebase. (backport #9527)

[mergify]

This is an automatic backport of pull request #9527 done by Mergify.
Cherry-pick of 46df8ba has failed:

On branch mergify/bp/3.10/pr-9527
Your branch is up to date with 'origin/3.10'.

You are currently cherry-picking commit 46df8ba71.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
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Changes to be committed:
	new file:   changelog.d/propagate-extra-prog-path

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   Cabal/src/Distribution/Simple/Configure.hs
	both modified:   Cabal/src/Distribution/Simple/ConfigureScript.hs
	both modified:   Cabal/src/Distribution/Simple/GHC.hs
	both modified:   Cabal/src/Distribution/Simple/GHCJS.hs
	both modified:   Cabal/src/Distribution/Simple/Program/Db.hs
	both modified:   Cabal/src/Distribution/Simple/Program/Find.hs
	both modified:   Cabal/src/Distribution/Simple/Program/GHC.hs
	both modified:   Cabal/src/Distribution/Simple/Program/Run.hs
	both modified:   Cabal/src/Distribution/Simple/Program/Types.hs
	both modified:   cabal-install/src/Distribution/Client/CmdExec.hs
	both modified:   cabal-install/src/Distribution/Client/CmdInstall.hs
	both modified:   cabal-install/src/Distribution/Client/CmdRun.hs
	both modified:   cabal-install/src/Distribution/Client/Config.hs
	both modified:   cabal-install/src/Distribution/Client/Get.hs
	both modified:   cabal-install/src/Distribution/Client/HttpUtils.hs
	both modified:   cabal-install/src/Distribution/Client/ProjectConfig.hs
	both modified:   cabal-install/src/Distribution/Client/ProjectOrchestration.hs
	both modified:   cabal-install/src/Distribution/Client/ProjectPlanning.hs
	both modified:   cabal-install/src/Distribution/Client/SetupWrapper.hs
	both modified:   cabal-install/src/Distribution/Client/VCS.hs
	both modified:   cabal-install/tests/UnitTests/Distribution/Client/Get.hs
	both modified:   cabal-install/tests/UnitTests/Distribution/Client/VCS.hs

Cherry-pick of f06195d has failed:

On branch mergify/bp/3.10/pr-9527
Your branch is ahead of 'origin/3.10' by 1 commit.
  (use "git push" to publish your local commits)

You are currently cherry-picking commit f06195d3a.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   cabal-install/src/Distribution/Client/CmdRun.hs
	new file:   changelog.d/pr-9341

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   cabal-install/src/Distribution/Client/CmdExec.hs

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[jasagredo]

There were many conflicts so probably it is worth double-checking that I didn't forget anything. I can do it next week probably if no one can do it earlier.

I went conflict by conflict trying to replicate the style that was there before, but with the code from the new chunks.