Fix PowerShell updates failing (#4865)

[Gabriel Dufresne (GabrielDuf)]

This pull request introduces important improvements to the PowerShell package operation helper and the process operation logic, focusing on better compatibility and error handling. The most significant changes are summarized below (#4865):

PowerShell Package Operation Improvements

• Ensured the -Scope parameter is only added for install operations, as Update-Module does not accept it, improving command correctness and preventing errors during updates.
• Added a step to force TLS 1.2 for all operations except uninstall, addressing compatibility issues with the PowerShell Gallery on Windows PowerShell 5.x, which defaults to outdated TLS versions.

Process Operation Error Handling

• Added a check to detect when an elevation tool (like UniGetUI Elevator or Gsudo) is unavailable, and gracefully abort the operation with a clear error message if administrator privileges cannot be obtained.