Get-Help -Full / -Parameter should consistently reflect wildcard support

[mklement0]

Note: This is posted a separate issue related to PowerShell/PowerShell#4716 per @SteveL-MSFT's request; this issue may go away, once all core cmdlets have the appropriate parameters consistently decorated with [SupportsWildcardsAttribute], assuming that the external help files are created by reflection.

Output from Get-Help -Parameter <param-name>, Get-Help -Full should consistently reflect whether a parameter supports wildcard patterns as arguments or not.

Currently, the free-form parameter description mentions wildcard support, while the list of properties describing the parameter does not; e.g.:

> Get-Help Get-Item -Parameter Path

-Path <String[]>
    Specifies the path to an item. This cmdlet gets the item at the specified location.
    Wildcards are permitted.  # !! This is the ONLY indication that wildcards are supported.
    This parameter is required, but the parameter name ("Path") is optional.
    
    Use a dot (.) to specify the current location. Use the wildcard character (*) to specify all the items in the current location.
    
    Required?                    true
    Position?                    1
    Default value                none
    Accept pipeline input?       true (ByValue, ByPropertyName)
    Accept wildcard characters?  false    #  !! Contradicts the above.