Fix some error messages in dotnet test

[mariam-abdulla]

This pull request improves error handling and messaging for the dotnet test command, especially when a project is not runnable or is misconfigured. It introduces a new error message for test command failures, refactors how run properties are retrieved, and ensures consistency in error reporting across different scenarios. Additionally, translations for the new error message have been added for multiple languages.

Error handling and messaging improvements:

• Added a new error message TestCommandExceptionUnableToRun for cases where dotnet test cannot proceed due to project misconfiguration, including details about the project, command, property, and current value. This message is now used instead of the generic run error in test scenarios. [1] [2]
• Updated resource files to include translations for TestCommandExceptionUnableToRun in all supported languages, ensuring consistent messaging for global users. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12]

Code refactoring and logic changes:

• Introduced RunProperties.GetPropsFromProject and RunProperties.ThrowUnableToRunError methods to centralize and clarify how run properties and related errors are handled for test projects.
• Updated SolutionAndProjectUtility logic to only retrieve run properties for platform test applications and to create minimal run properties for VSTest projects, improving robustness and clarity. [1] [2]
• Changed internal usage to call the new GetPropsFromProject method instead of the previous FromProject method, aligning with the new error handling flow.

[Copilot]

Pull Request Overview

This PR fixes error messages in the dotnet CLI by adding a new localized string TestCommandExceptionUnableToRun and updating the error handling logic for test command execution. The changes improve error messaging consistency between run and test commands.

• Adds a new localized error message specifically for test command execution failures
• Updates error handling logic to use the correct error message for test scenarios
• Refactors run properties handling to separate test platform applications from VSTest projects

Reviewed Changes

Copilot reviewed 16 out of 16 changed files in this pull request and generated 1 comment.

File	Description
src/Cli/dotnet/Commands/CliCommandStrings.resx	Adds new TestCommandExceptionUnableToRun error message string
src/Cli/dotnet/Commands/xlf/*.xlf	Auto-generated localization files with new error message translations
src/Cli/dotnet/Commands/Test/SolutionAndProjectUtility.cs	Updates error handling to use test-specific error message and improves run properties logic
src/Cli/dotnet/Commands/Run/RunProperties.cs	Refactors to extract common error handling logic and use appropriate error messages

[Youssef1313]

/backport to release/10.0.1xx

[github-actions]

Started backporting to release/10.0.1xx: https://github.com/dotnet/sdk/actions/runs/17127212696