Implemented the default functionality of user combobox.

[KarnaiahPesula]

Fixes #

Summary by CodeRabbit

• Bug Fixes
  • Removed the ability to enter new values in the user selection field, so only existing users can be chosen.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 4fd4fbf8-9c6d-4b13-a0b1-370559e23923

📥 Commits

Reviewing files that changed from the base of the PR and between 2451102 and 0a00fd8.

📒 Files selected for processing (1)

• sormas-ui/src/main/java/de/symeda/sormas/ui/utils/UserField.java

💤 Files with no reviewable changes (1)

• sormas-ui/src/main/java/de/symeda/sormas/ui/utils/UserField.java

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📝 Walkthrough

Walkthrough

Removes the setNewItemsAllowed(true) call on userCombo in UserField.initContent(), preventing users from entering arbitrary new items in the user selection combo box.

UserField combo restriction

Layer / File(s)	Summary
Disable new item creation in UserField sormas-ui/src/main/java/de/symeda/sormas/ui/utils/UserField.java	Removes userCombo.setNewItemsAllowed(true) so the combo box no longer accepts arbitrary new entries.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

A field once open to any new name,
Now keeps its list locked, no wildcards in the game.
The rabbit hops past, whiskers twitching with glee,
"Only known users—that's how it should be!"
🐇✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description only contains the template placeholder and lacks the required issue number and any implementation details.	Replace the placeholder with a real issue reference after # and add a brief summary of the change, impact, and any relevant testing notes.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title matches the change by describing the combobox's default behavior, though it is a bit broad.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch bugfix-14090-error-when-manually-typing-responsible-surveillance-officer

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