fix(core): rethrow CancellationException to avoid unintended suppression

Add specific handling for `CancellationException` in `Protocol.kt` to ensure it is rethrown instead of being suppressed by the generic `Throwable` catch block.

Author: kpavlov

kotlin-sdk-core/src/commonMain/kotlin/io/modelcontextprotocol/kotlin/sdk/shared/Protocol.kt

@@ -324,6 +324,8 @@ public abstract class Protocol(@PublishedApi internal val options: ProtocolOptio
                     result = result ?: EmptyResult(),
                 ),
             )
+        } catch (e: CancellationException) {
+            throw e
         } catch (cause: Throwable) {
             logger.error(cause) { "Error handling request: ${request.method} (id: ${request.id})" }
 

kotlin-sdk-server/api/kotlin-sdk-server.api

@@ -116,7 +116,7 @@ public class io/modelcontextprotocol/kotlin/sdk/server/Server {
 	protected final fun getInstructionsProvider ()Lkotlin/jvm/functions/Function0;
 	protected final fun getOptions ()Lio/modelcontextprotocol/kotlin/sdk/server/ServerOptions;
 	public final fun getPrompts ()Ljava/util/Map;
-	public final fun getResourceTemplates ()Ljava/util/Map;
+	public final fun getResourceTemplates ()Ljava/util/List;
 	public final fun getResources ()Ljava/util/Map;
 	protected final fun getServerInfo ()Lio/modelcontextprotocol/kotlin/sdk/types/Implementation;
 	public final fun getSessions ()Ljava/util/Map;