Infinite call to fetchAndRenderEmailsOnly for empty folders

[Kharchevskyi]

SR:
Open folder without any messages. Empty folder.

"⚙️[InboxViewController] View did load"
"🔥[InboxViewController] fetchAndRenderEmailsOnly"
"🔥[InboxViewController] fetchAndRenderEmailsOnly"
"🔥[InboxViewController] fetchAndRenderEmailsOnly"
"🔥[InboxViewController] fetchAndRenderEmailsOnly"
"🔥[InboxViewController] fetchAndRenderEmailsOnly"
"🔥[InboxViewController] fetchAndRenderEmailsOnly"
"🔥[InboxViewController] fetchAndRenderEmailsOnly"
"🔥[InboxViewController] fetchAndRenderEmailsOnly"

Please double check that pagination for messages works.
Open folder with a lot of messages and check that it loads new messages while scrolling to the bottom.

[tomholub]

Thanks for filing - how to reproduce?

[Kharchevskyi]

Updated description.

[sosnovsky]

@fcvakintos also noticed another issue with inbox pagination - when user opens Inbox screen it initially loads 2 pages of emails, instead of 1. It seems to be related to willBeginBatchFetchWith https://github.com/FlowCrypt/flowcrypt-ios/blob/master/FlowCrypt/Controllers/Inbox/InboxViewController.swift#L216

Probably these 2 issues have the same origin, so I'll include this one here too