Closes #5265

Summary

SentrySink discarded any Serilog event whose SourceContext started with "Sentry.". That heuristic dates back to 2019 ("don't log self log") and is meant to stop the SDK's own diagnostics looping back into Sentry — but it also matches application code. An app logging under, say, Sentry.Samples.AspNetCore.Serilog.Program had its log events dropped before anything was created: no event, no breadcrumb, no structured log, and therefore no event processors run. That last symptom is how #5265 was reported, but ISentryEventProcessor was never the problem.

Our own samples/Sentry.Samples.AspNetCore.Serilog uses that namespace, so the sample demonstrating the ILogger path was silently broken — which is where the reporter picked it up.

The filter can't simply be removed. MelDiagnosticLogger routes SDK diagnostics through ILogger<ISentryClient> whenever Debug is enabled (ApplicationBuilderExtensions.cs), and with Serilog as the MEL backend that's a genuine feedback loop. The isReentrant guard in the sink doesn't cover it, because the transport logs from the background worker thread.

So the check now matches the namespace roots the SDK actually owns, rather than a bare "Sentry." prefix.

Notes for review

• The root list is generated, not hand-maintained. A GenerateSentrySdkNamespaces target in Sentry.csproj reads the package list out of .craft.yml at build time and emits SentrySdkNamespaces.g.cs. No reflection (AOT/trimming-safe) and no list to keep in sync as packages are added. .craft.yml's line order is fixed, so output is deterministic. The target hard-errors rather than emitting an empty list, since an empty list would silently restore the loop risk.
• The core Sentry package can't be a prefix root. All of its types live under Sentry. — and so does user code — so treating it as a prefix would reproduce the original bug. Core has no logging dependency of its own, and the only category it ever logs under is Sentry.ISentryClient (from MelDiagnosticLogger), so that plus a bare Sentry are matched exactly. This is the one hardcoded string in the change; it's commented next to the thing that produces it.
• Sentry.Extensions.Logging is included deliberately. SentryLogger.IsFromSentry() carried the same heuristic plus a #if DEBUG carve-out for Sentry.Samples., which only ever helped samples built from source — anyone on the released package was still affected. Both integrations now share one helper. Sentry.NLog and Sentry.Log4Net have never had this filter at all; that asymmetry is left as-is here.
• .craft.yml gains Sentry.Maui.CommunityToolkit.Mvvm, which is packable but was missing from the registry list. Worth a second pair of eyes: it's a release-config change riding along with a bug fix, and it means the release registry starts tracking that package... main reason for including it in this PR is that we're using craft.yml to generate the list of namespaces that we match against for log filtering.