refactor: remove unnecessary register=false from @GrowToolHint

dap-was-lib/src/test/java/io/shinhanlife/dap/lib/mcp/ToolRegistryHeartbeatSenderTest.java

@@ -49,7 +49,7 @@ class ToolRegistryHeartbeatSenderTest {
     static class DisabledTool {
 
         @McpTool(name = "test_disabled_tool")
-        @GrowToolHint(register = false)
+        @GrowToolHint
         void execute() {
         }
     }

dap-was-lib/src/test/java/io/shinhanlife/dap/lib/util/ToolSourceUpdaterTest.java

@@ -22,7 +22,7 @@ class ToolSourceUpdaterTest {
                 import io.shinhanlife.dap.lib.annotation.GrowToolHint;
                 interface SampleUseCase {
                     @McpTool(name = "cmm_sample_search", description = "old")
-                    @GrowToolHint(register = false, requiresApproval = false)
+                    @GrowToolHint(requiresApproval = false)
                     void search();
                 }
                 """);