fix: google drive provider prevent auto popup

[igorDykhta]

• google drive storage provider: prevent auto popup on token refresh

[Copilot]

Pull request overview

Updates the demo app’s Google Drive provider to prevent automatic OAuth popups during token checks.

Changes:

• Removes silent GIS token refresh.
• Adjusts login prompts based on stored session state.
• Updates token request comments.

Suppressed comments (1)

examples/demo-app/src/cloud-providers/google-drive/google-drive-provider.js:85

• _readStorage() deliberately returns null when localStorage is unavailable, but this new no-GIS path then ignores the in-memory token and clears _accessToken. _requestAccessToken sets that field even when _writeStorage is a no-op, so a successful login in a browser without usable storage cannot be used for list/upload/download. Keep the in-memory token as a no-popup fallback and let the existing 401 handling invalidate it.

    // Reuse cached token only while expiresAt says it is still valid.
    // Do not call GIS here: requestAccessToken always opens a popup, and
    // CloudTile calls getUser() on mount (Load From Storage / Save Map).

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