docs: Clarify Live API START/END_SENSITIVITY_HIGH/LOW defaults are different in Gemini Live and Gemini Enterprise Agent Platform Live API

Fixes #2555

FUTURE_COPYBARA_INTEGRATE_REVIEW=#1069 from googleapis:release-please--branches--main 7204f42
PiperOrigin-RevId: 928868699

Author: yinghsienwu

src/main/java/com/google/genai/types/EndSensitivity.java

@@ -28,7 +28,10 @@ public class EndSensitivity {
 
   /** Enum representing the known values for EndSensitivity. */
   public enum Known {
-    /** The default is END_SENSITIVITY_LOW. */
+    /**
+     * The default is END_SENSITIVITY_LOW for Gemini Enterprise Agent Platform and
+     * END_SENSITIVITY_HIGH for Gemini Live.
+     */
     END_SENSITIVITY_UNSPECIFIED,
 
     /** Automatic detection ends speech more often. */

src/main/java/com/google/genai/types/StartSensitivity.java

@@ -28,7 +28,10 @@ public class StartSensitivity {
 
   /** Enum representing the known values for StartSensitivity. */
   public enum Known {
-    /** The default is START_SENSITIVITY_LOW. */
+    /**
+     * The default is START_SENSITIVITY_LOW for Gemini Enterprise Agent Platform and
+     * START_SENSITIVITY_HIGH for Gemini Live.
+     */
     START_SENSITIVITY_UNSPECIFIED,
 
     /** Automatic detection will detect the start of speech more often. */