Part of #137040 and #80374
`possibleResolutions` and `possibleResolutions` used a key containing the platform and the plugin name via `getResolutionKey`. The global list is not necessary and also confusing. It can be avoided by handling the resolution of plugins per platform. This helps to have a more self-contained plugin resolution. This also is necessary to reuse the plugin resolution logic (per platform) for #137040.
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