Overwrite trx when file name is explicitly provided

[Youssef1313]

Fixes #4561

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

Comments suppressed due to low confidence (1)

src/Platform/Microsoft.Testing.Extensions.TrxReport/TrxReportEngine.cs:209

• [nitpick] The warning message 'Warning: Trx file '{finalFileName}' already exists and is overwritten.' could be more informative. Consider rephrasing to 'Warning: The TRX file '{finalFileName}' already existed and was overwritten.'

return isFileNameExplicitlyProvided && _fileSystem.Exists(finalFileName) ? (finalFileName, $"Warning: Trx file '{finalFileName}' already exists and is overwritten.") : (finalFileName, null);

[MarcoRossignoli]

LGTM

[Evangelink]

Can we assert the expected message somewhere?