Replace $cookies global and related logic

[cnotv]

Description

From a removal attempt (#11272), the global $cookies and 2-way binding logic adopted are defined from the plugin cookie-universal-nuxt. This has been replaced with a more generic one cookie-universal #11321
As the logic creates several issues, replace with some more conventional patterns.
The main reason is the presence of too many states: cookies, global, and Vuex.

Occurrences are not so high:
https://github.com/search?q=%24cookies+repo%3Arancher%2Fdashboard&type=code&ref=advsearch

[nwmac]

@cnotv Can we push this to 2.11?

[cnotv]

@cnotv Can we push this to 2.11?

Yes definitely. @rak-phillip has found a generic replacement that makes this change not strictly necessary. unless we want to change the logic around.