PR Summary

This pull request updates the build configuration logic to better distinguish between different deployment types and set related properties more clearly. The main changes introduce an AppDeployment property that controls where the app host should be searched for, improving clarity and maintainability for framework-dependent, global tool, and self-contained deployments.

Build configuration improvements:

• Added new AppDeployment property in build.psm1 to explicitly specify deployment type (GlobalTool, FxDependent, or SelfContained), replacing the previous approach of directly toggling properties based on runtime options.
• Updated PowerShell.Common.props to define AppHostDotNetSearch based on the new AppDeployment property, ensuring the correct search locations are used for each deployment scenario.

PR Context

PR Checklist

• PR has a meaningful title
  • Use the present tense and imperative mood when describing your changes
• Summarized changes
• Make sure all .h, .cpp, .cs, .ps1 and .psm1 files have the correct copyright header
• This PR is ready to merge. If this PR is a work in progress, please open this as a Draft Pull Request and mark it as Ready to Review when it is ready to merge.
• Breaking changes
  • None
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  • Experimental feature(s) needed
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• User-facing changes
  • Not Applicable
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  • Documentation needed
    • Issue filed:
• Testing - New and feature
  • N/A or can only be tested interactively
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  • Make sure you've added a new test if existing tests do not effectively test the code changed