Calendar data is now secret in M+ / encounters

[mbattersby]

ADDON VERSION: 131

Describe the bug

/reload while in a M+ triggers errors due to new secret restrictions for calendar events.

Error:

[tail call]: ?
[HandyNotes_TheWarWithin/core/util.lua]:64: in function 'UpdateActiveCalendarEvents'
[HandyNotes_TheWarWithin/core/core.lua]:199: in function <HandyNotes_TheWarWithin/core/core.lua:176>
[C]: ?
[PublicOrdersReagentsColumn/libs/AceAddon-3.0-13/AceAddon-3.0.lua]:66: in function <...ersReagentsColumn/libs/AceAddon-3.0/AceAddon-3.0.lua:61>
[PublicOrdersReagentsColumn/libs/AceAddon-3.0-13/AceAddon-3.0.lua]:494: in function 'InitializeAddon'
[PublicOrdersReagentsColumn/libs/AceAddon-3.0-13/AceAddon-3.0.lua]:619: in function <...ersReagentsColumn/libs/AceAddon-3.0/AceAddon-3.0.lua:611>

Locals:

Need to check C_ChatInfo.InChatMessagingLockdown() and if true delay calendar init until ADDON_RESTRICTION_STATE_CHANGED fires and check is false.

Screenshots
n/a