fix(shim): Remove character replacement in .cmd -> .ps1 shims

[lewis-yeung]

Description

See #4910.

Motivation and Context

Partly fix #4910.

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.

[lewis-yeung]

@rashil2000 Could you please look at this? Any suggestions?

[niheaven]

Why do you put two things in one PR?

The .cmd->.ps1 part is LGTM, but parse_app() should be called in Find-Manifest() IMO. (I forgot why I hadn't added it) If you could separate this one, I'll make some change on it.

[lewis-yeung]

@niheaven Fine. I'll separate them so that you can do the parse_app part.

EDITED: Done. And I think the following change can be included in another PR that you will make:

@@ -903,7 +903,7 @@ function applist($apps, $global) {
 }
 
 function parse_app([string] $app) {
-    if($app -match '(?:(?<bucket>[a-zA-Z0-9-]+)\/)?(?<app>.*\.json$|[a-zA-Z0-9-_.]+)(?:@(?<version>.*))?') {
+    if($app -match '^(?:(?<bucket>[a-zA-Z0-9-]+)\/)?(?<app>.*\.json$|[a-zA-Z0-9-_.]+)(?:@(?<version>.*))?$') {
         return $matches['app'], $matches['bucket'], $matches['version']
     }
     return $app, $null, $null

Ref: #4910 (comment).

[niheaven]

In the CHANGELOG, you should mention this PR (4914), not the issue (4910).

https://github.com/ScoopInstaller/Scoop/issues/4914 will go here though issues is in the URL.

[lewis-yeung]

@niheaven Got it, thanks.