Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/36385
This change moves the `graphics/conversions.h` files from `ReactCommon/react/renderer/graphics` to `ReactCommon/react/renderer/core`, renaming it to `graphicsConversions.h`.
This is required because React-Fabric imports graphics, but graphics imports React-Fabric due to this file.
The change would be breaking, but we don't want to break the ecosystem without even a warning. So, we put back the `conversions.h` file, which now just `include` the new one and outputs a warning when building. This actually maintain the dep cycle for the current version, but at least users are warned.
## Changelog:
[iOS][Deprecated] - Deprecate the `ReactCommon/react/renderer/graphics/conversions.h` in favor of `ReactCommon/react/core/graphicsConversions.h`
Reviewed By: cortinico, dmytrorykun
Differential Revision: D43836261
fbshipit-source-id: ffe53a8ce2b0ea2dd1e1e5aaf6b3d3c5b57ad46d