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Fixes nvaccess#19157
Summary of the issue:

Unable to toggle AI Image Captioner while Screen Curtain is enabled
Description of user facing changes:

Able to toggle imageDesc while screen curtain is enabled

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This reverts commit fa3dcfa.

Reverts:
- #18475
- #19036
- #19024
- #19055
- #19057
- #19178
- #19243
- #19327
- Partial revert: #19342

### Issues fixed
Fixes #19298 

### Issues reopened
Reopens #16281

### Reason for revert / Can this PR be reimplemented? If so, what is
required for the next attempt

The current implementation of AI image descriptions yields low quality
captions from a 3 year old model (see #19298).
The current implementation also requires using numpy, which hogs RAM,
slows initialization, and increases the weight of the installer.
An attempt was made to convert this to C++ using WinML and Windows ONNX
runtimes as per #18662.
This would have removed numpy, and improved flexibility for using
different models in the future.
Unfortunately, this was not found to be feasible, as ONNX C++ fails to
work via 64bit emulation on ARM
(microsoft/onnxruntime#15403).

This means we have the following options for image descriptions:

1. Continue to use the python onnxruntime, and accept the RAM and
storage hits. Instead, improve the quality of the captioner with better
models such as
[git-base-coco](https://huggingface.co/microsoft/git-base-coco) or
[blip2](https://huggingface.co/Salesforce/blip2-opt-2.7b-coco).
2. Wait until MS builds ARM64EC into C++ ONNX (blocked by
microsoft/onnxruntime#15403)
3. Attempt to build our own fork of ONNX with ARM64EC
4. Build a separate ARM native installer of NVDA, offer as an
alternative to allow for ARM devices to do image descriptions with
numpy.
5. Release the feature on C++ without support for ARM devices.

All of these options require a significant amount of work.
As such, sadly this feature is not ready for a stable release.

Instead this code will be moved to a feature branch, until ONNX C++
matures such as fixing
microsoft/onnxruntime#15403.
Additionally, ONNX C++ runtimes are only available through the
experimental 2.0 version of the Windows App SDK, and requires you to
build your own headers from it.
I think this feature will be blocked until
microsoft/onnxruntime#15403 is implemented and
the 2.0 version of the Windows App SDK becomes stable.
Future re-implementations should also consider using higher quality,
more modern models.