Pull Request Overview

This PR removes the legacy suggestion framework that was replaced by the extensible feedback provider system. The changes eliminate the hard-coded suggestion mechanism and its associated experimental feature flag (PSFeedbackProvider), consolidating on the newer feedback provider approach.

• Removes the PSFeedbackProvider experimental feature flag and related legacy suggestion infrastructure
• Deletes legacy suggestion methods and related enums from HostUtilities.cs
• Removes conditional logic that checked the experimental feature flag and always uses the feedback provider

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
src/System.Management.Automation/resources/SuggestionStrings.resx	Removes the legacy suggestion string resource that was used by the old suggestion framework
src/System.Management.Automation/engine/hostifaces/HostUtilities.cs	Removes legacy suggestion infrastructure including SuggestionMatchType enum, suggestion initialization methods, and GetSuggestion methods along with unused imports
src/System.Management.Automation/engine/ExperimentalFeature/ExperimentalFeature.cs	Removes the PSFeedbackProvider experimental feature constant and its registration
src/Microsoft.PowerShell.ConsoleHost/host/msh/ConsoleHost.cs	Removes conditional logic and the EvaluateSuggestions method, always using EvaluateFeedbacks

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