Seller cannot see their own offer in offerbook if trade amount is higher than their current (buy side) account limit and the "Offers matching my accounts" toggle is enabled

[cbeams]

This is an edge case I'd never seen before today.

Repro steps:

1. Create a new SEPA account
2. Create a sell offer for an amount higher than the new account buy limits
3. Notice the offer creation succeeds and shows up in Portfolio > My Open Offers
4. Now go to Market > Buy, select EUR in currency filter, select Show all in payment method filter, and enable the Offers matching my accounts toggle
5. Notice that the offer created in step 2 (the user's own offer) does not show up in the list as expected
6. Uncheck the Offers matching my accounts toggle
7. Notice that the offer created in step 2 now shows up as originally expected, with its Remove and Edit buttons, etc.

Analysis:

The reason the user's own offer didn't show up in step 4 is because their account is still so new that they "could not take their own sell offer", and thus the offer gets hidden. It makes sense why this is happening, and it's arguably not a "bug" per se, but it is unintuitive, and took me several minutes to figure out what was really going on. I think it does actually qualify as a bug, though, because even if the account was old enough / signed enough, it would still never be the case that the user can take their own offer. The "buy" button does not even appear, only the Remove and Edit buttons.

Suggested fix:

It might require some special case handling, but I think that, so long as the offer book filter includes currency and payment method for a user's own offer, the offer should always show up, regardless whether the "Offers matching my accounts toggle" is enabled. This way, the user will always see their own offer when they would reasonably expect to.