fix: quickPick: getQuickPicks and isSelected does not work as expected

[pospisilf]

Before submitting your PR, please review the following checklist:

• [ ] CONSIDER adding a new test if your PR resolves an issue.
• [ ] DO keep pull requests small so they can be easily reviewed.
• [ ] DO make sure tests pass.
• [ ] DO make sure any public APIs changes are documented.
• [ ] DO make sure not to introduce any compiler warnings.

Before merging the PR:

• [ ] CHECK continuous integration of main branch is green.
• [ ] CHECK pull request check job is green.
• [ ] CHECK all pull request questions/requests are resolved.
• [ ] WAIT till PR is approved by at least 1 committer.

[sonarqubecloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud