[vs17.8] Merge tag v17.8.29

[surayya-MS]

Fixes #

Context

Changes Made

Testing

Notes

[Copilot]

Pull Request Overview

This PR merges tag v17.8.29 by bumping the MSBuild version, updating binding redirects and package versions, and refactoring file‐download logic.

• Refactored DownloadFile.TryGetFileName to take a Uri instead of HttpResponseMessage
• Updated binding redirects and codeBase entries for various assemblies to 7.x versions
• Bumped <VersionPrefix> and dependency versions in props and XML baseline files

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/Tasks/DownloadFile.cs	Changed TryGetFileName to use Uri; removed header-based filename lookup
src/MSBuild/app.config	Updated redirects to 7.x and inadvertently removed Microsoft.IO.Redist block
src/MSBuild/app.amd64.config	Updated redirects and codeBase versions to 7.x
eng/Versions.props	Bumped VersionPrefix and dependency version props
eng/Version.Details.xml	Updated dependency URIs, SHAs, and versions to 7.x
eng/SourceBuildPrebuiltBaseline.xml	Adjusted ignore patterns for System.Text.Json
eng/Packages.props	Removed System.Formats.Asn1 package reference

Comments suppressed due to low confidence (3)

src/Tasks/DownloadFile.cs:312

• New fallback logic for filename extraction from URI should be covered by unit tests to validate behavior when destination is user-specified versus when falling back to Path.GetFileName.

private bool TryGetFileName(Uri requestUri, out string filename)

src/Tasks/DownloadFile.cs:171

• The logic no longer attempts to read the Content-Disposition header, so filenames provided by the server will be ignored. Consider overloading or restoring header-based lookup if that behavior is still needed.

if (!TryGetFileName(uri, out string filename))

src/MSBuild/app.config:44

• The dependentAssembly block for Microsoft.IO.Redist was removed in this hunk. Re-add its <dependentAssembly> block to maintain the required binding redirect.

<bindingRedirect oldVersion="0.0.0.0-7.0.0.0" newVersion="7.0.0.0" />

[dotnet-policy-service]

Hello! I noticed that you're targeting one of our servicing branches. Please consider updating the version.

[rainersigwald]

lgtm. Please merge, do not squash.