Bug: Change ($ and %) is not shown per-account, but is OK per group (of accounts)

[gboudreau]

Describe the bug
Dashboard and Accounts pages report changes, but those are only displayed per "group", and opening the group, we don't see which account(s) changed.

To Reproduce
Steps to reproduce the behavior:

1. Import accounts from CSV
2. Wait 1 day
3. Balances changed of some accounts (see Bug: Net worth not calculated correctly after (CSV) accounts import #1329)
4. Notice how the changes are reported only per group, and not per account. All accounts show No change, while groups (totals) do.

Expected behavior
See changes per account

What version of Maybe are you using?
Self-hosted, v0.1.0

What operating system and browser are you using?
Docker

Screenshots / Recordings

Additional context
This might be a duplicate of #1329, in which some rows are missing from the account_balances table.
Still, the changes are correctly computed for the groups, so it should be able to indicate which accounts changed.

[gboudreau]

Of note: I tried to insert the missing rows in account_balances to have rows for both yesterday and today, for the same account, but with different balances, to see if that would fix this.
The behavior I described still happens: I see the change at the group level, but not at the account level:

[zachgoll]

@gboudreau thanks for the report. Will take a look!