fix: Skip Progress and Completed by fields on Task Duplication

[marination]

Issue:

• % Progress was copied over on Task duplication, due to which, every new task on save was set to completed if the previous was completed

Fix

• Dont copy %Progress and Completed By on duplication

[marination]

@Mergifyio backport version-12-hotfix

[mergify]

Command backport version-12-hotfix: pending

Waiting for the pull request to get merged

[mergify]

Command backport version-12-hotfix: failure

No backport have been created

• Backport to branch version-12-hotfix failed

Cherry-pick of e3e5fd7 has failed:

On branch mergify/bp/version-12-hotfix/pr-22565
Your branch is up to date with 'origin/version-12-hotfix'.

You are currently cherry-picking commit e3e5fd7e74.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add <file>..." to mark resolution)

	both modified:   erpnext/projects/doctype/task/task.json

no changes added to commit (use "git add" and/or "git commit -a")