Cleanup caching of component data, but fifxes

What's Changed

Storage cleanup

• feat(storage+octopus): fetch_cached helper + migrate Octopus onto the storage component by @mgazza in #4039
• Octopus cache tidy up and fixes, move temperature to storage by @springfall2008 in #4043
• Use storage for alertfeed by @springfall2008 in #4045

Bug fixes

• Octopus Flux export fallback fix by @springfall2008 in #4046
• Fix/gateway inverter reset by @springfall2008 in #4041

Full Changelog: v8.40.5...v8.40.6