Document UseSizeOptimizedLinq (#46543)

Co-authored-by: Genevieve Warren <[email protected]>

Author: MichalStrehovsky

docs/core/deploying/trimming/trimming-options.md

@@ -77,6 +77,7 @@ Several feature areas of the framework libraries come with trimmer directives th
 | `MetricsSupport` | When set to `false`, removes support for <xref:System.Diagnostics.Metrics> instrumentation. |
 | `StackTraceSupport` (.NET 8+) | When set to `false`, removes support for generating stack traces (for example, <xref:System.Environment.StackTrace?displayProperty=nameWithType> or <xref:System.Exception.ToString%2A?displayProperty=nameWithType>) by the runtime. The amount of information that is removed from stack trace strings might depend on other deployment options. This option does not affect stack traces generated by debuggers. |
 | `UseNativeHttpHandler` | When set to `true`, uses the default platform implementation of <xref:System.Net.Http.HttpMessageHandler> for Android and iOS and removes the managed implementation. |
+| `UseSizeOptimizedLinq` (.NET 10+) | When set to `true`, removes some of the throughput optimizations in LINQ that adversely affect the size of the application. Defaults to `true` with `PublishAot`; it might not be possible to natively compile some applications with this property set to `false`. |
 | `UseSystemResourceKeys` | When set to `true`, strips exception messages for `System.*` assemblies. When an exception is thrown from a `System.*` assembly, the message is a simplified resource ID instead of the full message. |
 | `XmlResolverIsNetworkingEnabledByDefault` (.NET 8+) | When set to `false`, removes support for resolving non-file URLs in <xref:System.Xml>. Only file-system resolving is supported. |