[CORE-233] Fix option flickers while adding

[nikkalin1008]

Type of changes

• Fix

Purpose

• Fix option flickers while adding
• Fix error adding "others" option
• Fix OAuth authenticate window

[Copilot]

Pull request overview

This PR addresses three bugs: (1) options flickering when adding new choices due to unstable React keys, (2) an error when adding an "others" option due to misplaced key prop, and (3) the OAuth authentication popup not appearing centered on screen.

Changes:

• Fixed OAuth popup centering by computing left/top coordinates based on screen position and outer window dimensions before calling window.open.
• Fixed flickering and "other" option error by correcting the key prop placement from the inner OptionsInput to the outer div, and refactoring syncQuestionFromApi to preserve client-side option arrays instead of overwriting them with server-returned choices (which had different IDs, causing remounts).
• Removed now-outdated JSDoc comments on Option and DetailOption types that referenced the old strategy of using API choice IDs.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
src/shared/components/AccountButton/AccountButton.tsx	Centers the OAuth popup window on screen using computed left/top from screen position and window dimensions
src/features/form/components/AdminFormDetailPages/types/question.ts	Removes JSDoc comments about stable ID strategy that no longer applies
src/features/form/components/AdminFormDetailPages/components/OptionsQuestion.tsx	Moves key prop from inner OptionsInput to outer div wrapper, fixing "other" option rendering bug
src/features/form/components/AdminFormDetailPages/SectionEditPage.tsx	Refactors syncQuestionFromApi to preserve client-side options/detailOptions arrays (preventing flicker) and uses immutable spread-based state update

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