Communication: Add private channel icon to sidebar

[asliayk]

Checklist

General

• This is a small issue that I tested locally.
• I chose a title conforming to the naming conventions for pull requests.

Client

• I strictly followed the client coding and design guidelines.
• I added multiple screenshots/screencasts of my UI changes.

Motivation and Context

Currently, users cannot easily distinguish between private and public channels in the sidebar without clicking on each channel, since there is no private channel icon.
Closes #9149

Description

Added a lock icon next to each private channel name in the sidebar, positioned before the channel title.

Steps for Testing

Prerequisites:

• 1 Instructor

1. Navigate to the Communication section of a course.
2. In the general section of the sidebar, check if there is any private channel. If not, create a private channel by clicking the "+" button.
3. Verify that the private channel has a lock icon.

Testserver States

Note

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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
• I (as a reviewer) confirm that the server changes (in particular related to database calls) are implemented with a very good performance

Code Review

• Code Review 1
• Code Review 2

Manual Tests

• Test 1
• Test 2

Exam Mode Test

• Test 1
• Test 2

Test Coverage

Screenshots

OLD

NEW

Summary by CodeRabbit

• New Features
  • Introduced a new icon for private conversations, enhancing visual differentiation between public and private conversations.
  • Improved the logic for assigning icons based on conversation visibility, providing clearer user feedback.
• Bug Fixes
  • Resolved inconsistencies in icon representation for different conversation types.

[coderabbitai]

Walkthrough

The changes to the CourseOverviewService enhance the visibility of private conversations in the sidebar by introducing the faLock icon from FontAwesome. This improvement allows users to easily distinguish between public and private conversations, significantly enhancing user experience and clarity. The logic for assigning icons has been refined to reflect the privacy status of conversations, ensuring appropriate visual representation throughout the application.

Changes

File Path	Change Summary
src/main/webapp/app/overview/course-overview.service.ts	Added faLock icon for private conversations and updated icon assignment logic to reflect privacy status.

Assessment against linked issues

Objective	Addressed	Explanation
Private channel icon visibility in sidebar (#9149)	✅

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[edkaya]

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[egekurt123]

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[SimonEntholzer]

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[sarpsahinalp]

Code lgtm

[pzdr7]

LGTM on TS2 👍