Adaptive learning: Allow editors to edit the competency link weight

[JohannesStoehr]

🚨 Stacked on #9517 only merge after the other PR 🚨

Checklist

General

• This is a small issue that I tested locally and was confirmed by another developer on a test server.
• Language: I followed the guidelines for inclusive, diversity-sensitive, and appreciative language.
• I chose a title conforming to the naming conventions for pull requests.

Client

• Important: I implemented the changes with a very good performance, prevented too many (unnecessary) REST calls and made sure the UI is responsive, even with large data (e.g. using paging).
• I strictly followed the principle of data economy for all client-server REST calls.
• I strictly followed the client coding and design guidelines.
• I added multiple integration tests (Jest) related to the features (with a high test coverage), while following the test guidelines.
• I added multiple screenshots/screencasts of my UI changes.
• I translated all newly inserted strings into English and German.

Motivation and Context

#9446
continuation of #9517

Description

#9517 changed the database and object structure to support weights between competencies and learning objects.
This PR now adds a dropdown for all selected competencies to allow the user to choose between a 'low', 'medium' and 'high' weight of the link.

Steps for Testing

Prerequisites:

• 1 Instructor
• 1 Exercise or Lecture Unit
• Competencies/Prerequisites

1. Log in to Artemis
2. Create/Update the learning object and select some competencies or prerequisites to link
3. Change the weight via the dropdown
4. Check that after saving and reentering the edit view of the learning object the competencies are linked with the weight you choose

Testserver States

Note

These badges show the state of the test servers.
Green = Currently available, Red = Currently locked
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Review Progress

Performance Review

• I (as a reviewer) confirm that the client changes (in particular related to REST calls and UI responsiveness) are implemented with a very good performance even for very large courses with more than 2000 students.
• I (as a reviewer) confirm that the server changes (in particular related to database calls) are implemented with a very good performance even for very large courses with more than 2000 students.

Code Review

• Code Review 1
• Code Review 2

Manual Tests

• Test 1
• Test 2

Performance Tests

• Test 1
• Test 2

Test Coverage

Client

Class/File	Line Coverage	Confirmation (assert/expect)
competency-selection.component.ts	95%	✅

Screenshots

Weight dropdown only for selected competencies:

Tooltip explaining the weight:

[dmytropolityka]

code

[MaximilianAnzinger]

Maintainer approved

The base branch was changed.

[coderabbitai]

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📥 Commits

Reviewing files that changed from the base of the PR and between d16872d and bf92aac.

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[bassner]

The base branch was changed so all reviews were lost. This PR had enough approvals.