[Bug]: sync client makes MacBook Pro switch to dGPU, should use iGPU first

### ⚠️ Before submitting, please verify the following: ⚠️

- [X] This is a **bug**, not a question or a configuration issue.
- [X] This issue is **not** already reported on Github (I've searched it).
- [X] Nextcloud Server and Desktop Client are **up to date**. See [Server Maintenance and Release Schedule](https://github.com/nextcloud/server/wiki/Maintenance-and-Release-Schedule) and [Desktop Releases](https://nextcloud.com/install/#install-clients) for supported versions.
- [X] I agree to follow Nextcloud's [Code of Conduct](https://nextcloud.com/contribute/code-of-conduct/)

### Bug description

the new facelift of the sync client will now default to using the dGPU (High performance mode) on a macbook with dual GPUs. The machine will _stay_ on High performance mode, even when the menu bar gui is not being shown. Will only revert back to iGPU once the app is quit

I consider this a bug because using the dGPU uses significantly more battery, and should only ever be turned on when using a graphics intensive app (photoshop, blender, coding shaders, etc).

This has only started happening when I updated to 3.14.0. previous versions did not do this.
[this issue stating the same problem is closed](https://github.com/nextcloud/desktop/issues/501)

### Steps to reproduce

1. open nextcloud sync client
2. use an app like [gswitch](https://github.com/CodySchrank/gSwitch) to determine gpu switching (can list Nextcloud as a dependency)

### Expected behavior

Syncing clients should never use dGPU when iGPU is available, uses too much battery

### Which files are affected by this bug

all files?

### Operating system

macOS

### Which version of the operating system you are running.

macOS Sonoma

### Package

Official macOS 12+ universal pkg

### Nextcloud Server version

Nextcloud Hub 8 (29.0.4)

### Nextcloud Desktop Client version

3.14.0

### Is this bug present after an update or on a fresh install?

Updated from a minor version (ex. 3.4.2 to 3.4.4)

### Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

### Are you using an external user-backend?

- [X] Default internal user-backend
- [ ] LDAP/ Active Directory
- [ ] SSO - SAML
- [ ] Other

### Nextcloud Server logs

_No response_

### Additional info

_No response_

No source files or tests are identified. First reproduce the behavior on a dual-GPU MacBook running macOS Sonoma with gSwitch, compare client version 3.14.0 with a prior version, and trace the macOS desktop client startup and menu-bar visibility behavior. Done means the sync client uses the iGPU when available and does not keep the dGPU active while the menu-bar GUI is hidden.

Written by the indexing model from the issue text.