feat: add separate log‑level buttons for test result filtering and download options for all/filtered logs

[meryemefe]

Feature: add separate log‑level buttons for test result filtering and download options for all/filtered logs

Motivation

This task is implemented to enhance user experience in Test Results Filtering / Downloading modal view. This task refers to the open issue #705 .

Description

There are three changes:

1. Test Results filter dropdown's style has been improved.
2. Test Details modal view had the log level slider before. The slider has been replaced with separate buttons to improve UI/UX.
3. A text filter has been added to indicate whether the filter is applied or not. Additional download button has been added. Now there are two download options for both all logs and filtered logs.

Testing Instructions

Prerequisites:

• GitHub Account without having any additional access-rights (e.g. admin, owner)
• A branch or pull request with at least one pipeline and test results.

Flow:

1. Log in to Helios as a Developer
2. Navigate to a repository
3. Go to the Branches tab
4. Click on a branch name to view branch details
5. Expand Test Results and click on the filter dropdown to see the new style.
6. Open Test Details modal by clicking on the Details button.
7. Click on the log level buttons to filter the logs.
8. See the two download buttons below.

Screenshots

Fig. 1: New style of Test Results filter dropdown Fig. 2: Example screenshot of Test Details modal when a filter is applied Fig. 3: Example screenshot of Test Details modal when a filter is not applied

Checklist

General

• PR description explains the purpose and changes. (f.e. following the 'Conventional Commits')
• Changes have been tested locally.
• Screenshots have been attached.

Client

• I documented the TypeScript code using JSDoc style.
• I added multiple screenshots/screencasts of my UI changes.

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.01% (target: -1.00%)	✅ 40.00%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (fef0700)	7926	2126	26.82%
Head commit (cec2e0c)	7930 (+4)	2128 (+2)	26.83% (+0.01%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#831)	5	2	40.00%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[github-actions]

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