fix(manifest): Correct source of manifest

[HUMORCE]

Description

Correct prompt about source of manifest when not found.

Motivation and Context

Close #5546

This is the original functionality that was broken when merging new features/refactoring. After the changes, user must explicitly input full filename for local manifests:

$manifest = '{
    "version": "1",
    "url": "http://example.org/#/App.exe"
}'

$manifest | out-file localmanifest.json -Encoding ascii
$manifest | out-file manifest_without_suffix -Encoding ascii

scoop install localmanifest × # This was allowed before.
scoop install localmanifest.json √
scoop install .\localmanifest.json √
scoop install manifest_without_suffix √

Example for actual usage:

~\Desktop\manifests
❯ ls -name
git
git.json
~\Desktop\manifests
❯ scoop info git

Name        : git
Description : Distributed version control system
Version     : 2.42.0.2
Bucket      : main
Website     : https://gitforwindows.org
License     : GPL-2.0-only
Updated at  : 8/30/2023 12:30:31 PM
Updated by  : github-actions[bot]
Installed   : 2.42.0.2
Binaries    : bin\sh.exe | bin\bash.exe | cmd\git.exe | cmd\gitk.exe | cmd\git-gui.exe | cmd\scalar.exe | usr\bin\tig.exe |
              git-bash.exe
Shortcuts   : Git Bash | Git GUI
Environment : GIT_INSTALL_ROOT = <root>
Notes       : Set Git Credential Manager Core by running: "git config --global credential.helper manager"

              To add context menu entries, run '<root>\install-context.reg'

              To create file-associations for .git* and .sh files, run '<root>\install-file-associations.reg'


~\Desktop\manifests

# install git from main bucket
❯ scoop install git

# install git from ~\Desktop\manifests\git file
❯ scoop install .\git

# install git from ~\Desktop\manifests\git.json file, unless a manifest with filename `git.json.json` in added buckets
❯ scoop install git.json

# install git from ~\Desktop\manifests\git.json file
❯ scoop install .\git.json

How Has This Been Tested?

test.ps1: https://gist.github.com/HUMORCE/4e215c95bdcbb9d17a6b0cda777b6331/raw/790ee7b5b050dfb511ce59e6c83efdd4404292f0/test.ps1

screenshot: left=before, right=after

show source for remote or local manifest when installing:

Checklist:

• I have read the Contributing Guide.
• I have ensured that I am targeting the develop branch.
• I have updated the documentation accordingly.
• I have updated the tests accordingly.
• I have added an entry in the CHANGELOG.