Add setting to show commit SHAs in tree

[jameswilmiller]

I wasn't sure whether community contributions were being accepted but I took the liberty of making the PR.

Summary:

Adds a new setting that displays abbreviated commit SHAs in the pull request commits tree.

When enabled, commit descriptions are shown in the following format:

49334c4 · 2 days ago

I went with this design decision because date will truncate before SHA which I believe is the more important
piece of information when reviewing the commits as a list. If you believe a different direction would be better feel free to comment.

The setting defaults to disabled, so the existing behaviour remains unchanged.

Changes:

• Added the githubPullRequests.showCommitShaInTree setting.
• Added localized text for the setting.
• Displayed the first seven characters of the commit SHA when the setting is enabled.
• Preserved the relative commit date when available.
• Refreshed the commits tree immediately when the setting changes.

Testing:

manually verified that:

• The setting is disabled by default.
• Enabling the setting displays the abbreviated commit SHA.
• Disabling the setting removes the SHA.
• The commits tree updates without reloading the window.
• Commits with a date display · .
• Commits without a date display only the short SHA when enabled.
• Existing commit-tree functionality continues to work.

No automated tests were added ( I wasn't sure whether this was required but I am happy to write some if needed ).

I have attached screenshots below,

Screenshots

Setting:

Disabled Setting:

Disabled Setting with no date:

Enabled Setting:

Enabled Setting with no date:

Fixes #8701

[jameswilmiller]

@microsoft-github-policy-service agree

[Copilot]

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.