Development: Show saved commit in assessment editor

[theblobinthesky]

Checklist

General

• This is a small issue that I tested locally and was confirmed by another developer on a test server.
• I chose a title conforming to the naming conventions for pull requests.

Client

• I strictly followed the client coding and design guidelines.
• I verified the change does not introduce unnecessary REST calls and keeps the UI responsive.

Changes affecting Programming Exercises

• High priority: I tested the change with a test server configured with the integrated lifecycle setup (LocalVC and LocalCI).

Motivation, Context and Description

When online editor changes are saved but not submitted/committed, the server-side working copy can be left dirty or even conflicted if the student also pushes from a local clone. During assessment this can lead to the file browser showing "Unsubmitted" and, at times, stale file content (e.g., showing an unsent "2" instead of the latest committed "3"). Tutors then have to manually use "Resolve Conflicts" before assessing.

Closes #10008.

This PR ensures assessors see the latest committed code by automatically normalizing the repository working copy in tutor assessment:

• On opening the programming assessment editor (tutor mode), if the repository status is UNCOMMITTED_CHANGES or CONFLICT, the client calls resetRepository() and then re-checks status before loading files.
• If the repository is clean, files are loaded as before; if a genuine conflict remains after reset, the existing conflict handling still applies and blocks actions.

Steps for Testing

Prerequisites: 1 Instructor, 1 Tutor (or Instructor acting as Tutor), 1 Student, LocalVC/LocalCI test server.

1. Create a programming exercise with manual assessment and online editor enabled; set the due date a few minutes in the future.
2. Student: In the online editor, add "1" to any line and click Save (do NOT submit/commit).
3. Student locally: Clone the repository, change the same line to "3", commit and push.
4. Back in the online editor (still open): change the same spot to "2" and Save (still do NOT submit/commit).
5. Wait until the due date is over so assessment is allowed.
6. Tutor: Open the submission for assessment.

Verify:

• The file browser no longer shows "Unsubmitted" for this case; status should be clean.
• The file contents shown reflect the latest commit ("3"), not the uncommitted working copy ("2").
• If an actual conflict persists after reset, the UI still indicates conflict and blocks actions (as before).
• Regular student editing (non-assessment context) is unaffected.

Review Progress

Code Review

• Code Review 1
• Code Review 2

Manual Tests

• Test 1
• Test 2

Test Coverage

Client-only behavioral change; no new code paths with complex logic to unit test. The change hooks into the existing initialization flow and reuses resetRepository() and status checks. If preferred, we can add a small test that verifies the auto-reset branch invokes resetRepository() in tutor assessment when commitState is dirty/conflicted.

Screenshots

No UI layout changes; status and content correctness can be verified via the Steps for Testing.

Documentation

Rationale and line-by-line explanation: see ttt.md.

[github-actions]

End-to-End (E2E) Test Results Summary

	Tests	Passed ☑️	Skipped ⚠️	Failed ❌️	Time ⏱
End-to-End (E2E) Test Report	205 ran	200 passed	3 skipped	2 failed	1h 13m 5s 345ms

Test	Result	Time ⏱
End-to-End (E2E) Test Report
e2e/exercise/quiz-exercise/QuizExerciseManagement.spec.ts
ts.Quiz Exercise Management › Quiz Exercise Creation › Creates a Quiz with Drag and Drop	❌ failure	2m 5s 662ms
e2e/exam/test-exam/TestExamStudentExams.spec.ts
ts.Test Exam - student exams › Check exam participants and their submissions › Search for a student in exams	❌ failure	6m 5s 362ms

[github-actions]

End-to-End (E2E) Test Results Summary

	Tests	Passed ☑️	Skipped ⚠️	Failed ❌️	Time ⏱
End-to-End (E2E) Test Report	205 ran	200 passed	3 skipped	2 failed	1h 15m 8s 67ms

Test	Result	Time ⏱
End-to-End (E2E) Test Report
e2e/exercise/quiz-exercise/QuizExerciseManagement.spec.ts
ts.Quiz Exercise Management › Quiz Exercise Creation › Creates a Quiz with Drag and Drop	❌ failure	2m 4s 602ms
e2e/exercise/programming/ProgrammingExerciseStaticCodeAnalysis.spec.ts
ts.Static code analysis tests › Configures SCA grading and makes a successful submission with SCA errors	❌ failure	2m 31s 603ms

[github-actions]

There hasn't been any activity on this pull request recently. Therefore, this pull request has been automatically marked as stale and will be closed if no further activity occurs within seven days. Thank you for your contributions.

[github-actions]

End-to-End (E2E) Test Results Summary

	Tests	Passed ✅	Skipped ⚠️	Failed	Time ⏱
End-to-End (E2E) Test Report	205 ran	202 passed	3 skipped	0 failed	1h 4m 52s 11ms

Test	Result	Time ⏱
No test annotations available