Behave correctly in iCloud suspended state

[jaanus]

Describe the bug

When creating a chat and needing to accept new iCloud terms, seeing this.

2020-11-19 10:17:32.018822+0200 Tact-dev[32439:215503] [SyncCoordinator (Upload)] Error saving chat to CloudKit: Optional(<CKError 0x600003a37510: "Not Authenticated" (9/1004); "Can't return account credentials for account 560D5683-9EF2-44C5-A712-0669654AB5EA because the account needs to verify new terms or is in suspended mode.">)
2020-11-19 10:17:32.068132+0200 Tact-dev[32439:215503] [SyncCoordinator (Upload)] Error saving messages to CloudKit: Optional(<CKError 0x600003a17390: "Partial Failure" (2/1011); "Failed to modify some records"; partial errors: {
	4C0A9FA2-7E2A-42E1-8B88-44D69842F0AB:(Chats:__defaultOwner__) = <CKError 0x600003a5a730: "Not Authenticated" (9/1004); "Can't return account credentials for account 560D5683-9EF2-44C5-A712-0669654AB5EA because the account needs to verify new terms or is in suspended mode.">
}>)