Fix dotnet latest resolution

[sliekens]

Summary

Fix the dotnet feature's latest resolution so it is resolved from the .NET releases index instead of comparing STS and LTS versions lexicographically.

Resolves #1597.

Changes

• resolve latest from release-metadata/releases-index.json
• use the first active entry from the releases index
• read latest-sdk for SDK installs and latest-runtime for runtime installs
• keep explicit versions and lts flowing through the vendored dotnet-install.sh logic
• add jq to the feature install dependencies
• update tests to stop depending on helper-side channel resolution
• remove the deprecated Aspire workload from docs and workload tests

Validation

• devcontainer features test -p . -f dotnet
• sourced the updated helper and verified live resolution returns 10.0.103 for SDK and 10.0.3 for runtime
• shell syntax checks passed for the updated scripts

[Copilot]

Pull request overview

Updates the dotnet feature’s latest version resolution to use the official .NET releases index metadata instead of lexicographic STS/LTS comparisons.

Changes:

• Resolve latest from release-metadata/releases-index.json by selecting the first active entry.
• Install jq as a dotnet feature dependency and update helpers/tests accordingly.
• Remove deprecated aspire workload usage from docs and workload tests.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
test/dotnet/scenarios.json	Drops aspire from workload scenario coverage.
test/dotnet/install_dotnet_workloads.sh	Removes assertion for deprecated aspire workload installation.
test/dotnet/install_dotnet_specific_release.sh	Adjusts specific-release test expectation for .NET 10.0.
test/dotnet/install_dotnet_lts.sh	Stops using helper channel-resolution; fetches LTS expected version directly.
test/dotnet/dotnet_helpers.sh	Updates test helper to resolve latest via releases-index.json + jq.
src/dotnet/scripts/dotnet-helpers.sh	Updates feature helper to resolve latest via releases-index.json + jq.
src/dotnet/install.sh	Adds jq to apt dependencies for releases-index parsing.
src/dotnet/README.md	Documents prerelease suffixes and removes aspire from workload example.
src/dotnet/NOTES.md	Removes aspire from workload example.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

You can also share your feedback on Copilot code review. Take the survey.

[Copilot]

Pull request overview

Copilot reviewed 9 out of 9 changed files in this pull request and generated 1 comment.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

You can also share your feedback on Copilot code review. Take the survey.

[Copilot]

Pull request overview

Copilot reviewed 9 out of 9 changed files in this pull request and generated 3 comments.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

You can also share your feedback on Copilot code review. Take the survey.

[Copilot]

Pull request overview

Copilot reviewed 9 out of 9 changed files in this pull request and generated no new comments.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

You can also share your feedback on Copilot code review. Take the survey.