feat(dav): increase default calendar subscription refresh rate to one day

[tcitworld]

Summary

With the performance benefits from #43541 it makes sense

Reference #46171 (comment)

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)

[ChristophWurst]

Thank you

[github-actions]

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