Queued deposits are withdrawable and affect health factor for liquidation/rebalancing only

[jordanschalm]

Context

FCM supports queueing deposits; if a deposit exceeds the deposit rate limit (see #63), it will be queued and deposited later on. FCM automatically processes queued deposits using scheduled transactions.

We need to change some aspects of how queued deposits are handled.

1. Queued deposits should count toward a position's health factor for the purposes of liquidation/rebalancing only. Queued deposits should not count a position's total borrowing capacity.
2. When a user withdraws from their position, they should withdraw queued deposits first. (Currently queued deposits cannot be withdrawn until they exit the queue and are deposited.)

[jordanschalm]

Summary from Q&A Jan 27

• queued deposits should be withdrawable
• queued deposits should count toward health factor for purposes of liquidation but not for purposes of borrow capacity