PowerShell -MatchOption default should be EqualsCaseInsensitive

Brief description of your issue

PowerShell is a case insensitive language, matching by case is opt-in. The MatchOption parameter default should be EqualsCaseInsensitive to have the standard PowerShell experience.

Steps to reproduce

Find-WinGetPackage -Id microsoft.powershell

Expected behavior

Only the matching Id is returned.

Find-WinGetPackage -Id microsoft.powershell

Name               Id                           Version Source
----               --                           ------- ------
PowerShell         Microsoft.PowerShell         7.4.4.0 winget

Actual behavior

The preview package is also being returned which should not happen unless PowerShell wildcards are used to do a like comparison instead of equals.

Find-WinGetPackage -Id microsoft.powershell

Name               Id                           Version Source
----               --                           ------- ------
PowerShell         Microsoft.PowerShell         7.4.4.0 winget
PowerShell Preview Microsoft.PowerShell.Preview 7.5.0.3 winget

Environment

Name                    Version
----                    -------
Microsoft.WinGet.Client 1.8.1911

Start by reproducing the Find-WinGetPackage -Id microsoft.powershell command and tracing the MatchOption parameter's default in the PowerShell command path. Confirm that the default performs case-insensitive equality, while wildcard input retains like-comparison behavior. Done means the command returns only Microsoft.PowerShell, not Microsoft.PowerShell.Preview.