fix fills wait for fresh data on internal-only coarse subscriptions

[Tyagiquamar]

Problem

A daily continuous-future market order fills immediately at the stale previous close Tue-Fri with a stale-price warning, instead of waiting for fresh data. AddFuture("MNQ", Resolution.Daily) + MarketOrder(future.Mapped) at 12:30 fills at the prior 17:00 close (19.5h stale). On Mondays (67.5h gap) it correctly waits, and with SetFilter(0, 90) it always waits, which points at the wait-condition rather than data.

Root cause

In Common/Orders/Fills/FillModel.cs, ShouldWaitForFreshData only lets non-internal subscriptions decide whether all subscribed resolutions are coarse, and returns hasNonInternal. The mapped contract of a continuous future is internal-only by construction (ContinuousContractUniverse.GetSubscriptionRequests marks mapped configs internal), so the method returns false and the order never waits. The 67.5h Monday gap only worked because it exceeds the fallback one-resolution span in ShouldWaitForFreshDataOnStale; the 19.5h weekday gap does not.

Fix

When there are no non-internal subscriptions, fall back to evaluating the internal configs with the same all-coarse rule. Behavior is otherwise unchanged: empty config lists still return false, and any fine resolution (internal or not) still returns false. With the fallback, an internal-only daily subscription waits on a stale previous close exactly like a regular daily subscription.

Regression test

New MarketOrderWaitsForFreshDataWithInternalOnlyDailyConfig (Buy/Sell) in Tests/Common/Orders/Fills/FutureFillModelTests.cs: internal-only daily config, previous close 19.5h stale (within one daily bar, past the 1h stale span) must not fill; after a fresh daily bar arrives it fills at the fresh close. Verified the test fails on pre-fix code (both cases fill at the stale price) and passes with the fix.

Verification

In Docker (mcr.microsoft.com/dotnet/sdk:10.0 + Python 3.11 for pythonnet, matching CI's foundation setup):

• dotnet build ./Tests/QuantConnect.Tests.csproj -c Release: 0 errors
• dotnet test ./Tests/bin/Release/QuantConnect.Tests.dll --filter FullyQualifiedName~FutureFillModelTests (from Tests/bin/Release): 18/18 passed, including the 2 new cases and all existing fill tests

Fixes #9827