Change hosts and exclude hosts to MultiValueTextField in TargetDialog

[bjoernricks]

What

Change hosts and exclude hosts to MultiValueTextField in TargetDialog

Why

Improve the usability of the TargetDialog. Also extend the unit tests for the affected components.

References

https://jira.greenbone.net/browse/GEA-1972

Checklist

• I have added tests for the changes
• I have used the following LLMs/AI tools in this pull request:

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

Snapshot Warnings

⚠️: No snapshots were found for the head SHA 82a531c.

Ensure that dependencies are being submitted on PR branches and consider enabling retry-on-snapshot-warnings. See the documentation for more information and troubleshooting advice.

Scanned Files

None

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.51%. Comparing base (e244a4b) to head (82a531c).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5678      +/-   ##
==========================================
+ Coverage   87.43%   87.51%   +0.08%     
==========================================
  Files        1304     1304              
  Lines       34289    34294       +5     
  Branches    10244    10251       +7     
==========================================
+ Hits        29979    30011      +32     
+ Misses       3897     3873      -24     
+ Partials      413      410       -3     

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