Fix reset credits propagation: lift to parent instead of digging into child cards

[rygel]

Problem

The previous fix (PR #706) added a ResolveResetCredits method that dug into WindowCards to find the burst card's ResetCreditsAvailable. This is the exact same pattern of parent-reaching-into-child we've explicitly been told to avoid.

Fix

Root cause: GroupedUsageDisplayAdapter.Expand creates a WindowedProviderUsage but never propagates ResetCreditsAvailable from the child burst card to the parent.

Solution: Set ResetCreditsAvailable on the WindowedProviderUsage parent at construction time in the adapter. The tooltip code now just checks usage.ResetCreditsAvailable like every other provider — no child-digging needed.

Changed files:

• GroupedUsageDisplayAdapter.cs: Propagate burst card's ResetCreditsAvailable to parent WindowedProviderUsage
• MainWindowRuntimeLogic.cs: Revert ResolveResetCredits, go back to simple usage is QuotaProviderUsage qReset check