Upgrade Electron to resolve macOS Tahoe performance issues

[greatislander]

A bug in earlier versions of Electron has caused performance issues with many Electron apps on macOS Tahoe. This PR updates Electron to a patched version which should resolve the issue for those experiencing it.

More details here: https://mjtsai.com/blog/2025/09/30/electron-apps-causing-system-wide-lag-on-tahoe/, electron/electron#48376

Platforms this PR was tested on:

• Windows
• macOS
• Linux (specify distro)

Self-review checklist

• Self-reviewed the changes for clarity and maintainability
  (variable names, code reuse, readability, etc.).

Communicate decisions, questions, and potential concerns.

• Explains differences from previous plans (e.g., issue description).
• Highlights technical choices and bugs encountered.
• Calls out remaining decisions and concerns.
• Automated tests verify logic where appropriate.

Individual commits are ready for review (see commit discipline).

• Each commit is a coherent idea.
• Commit message(s) explain reasoning and motivation for changes.

Completed manual review and testing of the following:

• Visual appearance of the changes.
• Responsiveness and internationalization.
• Strings and tooltips.
• End-to-end functionality of buttons, interactions and flows.
• Corner cases, error conditions, and easily imagined bugs.

[shubham-padia]

cc @andersk

[maxffarrell]

@andersk

[andersk]

Don’t worry. We already have a policy of upgrading all of our dependencies, including Electron, as part of the release process for every Zulip Desktop release. You can see this in our changelog.