style: add confirm button to temp call layout

app/src/main/res/layout/activity_temp_call.xml

@@ -131,6 +131,18 @@
             android:textColor="#10B981"
             android:textSize="12sp"
             android:visibility="gone" />
+
+        <!-- 用于确认并静音语音的按钮 -->
+        <Button
+            android:id="@+id/btn_confirm_alert"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            android:background="@drawable/btn_minimize_bg"
+            android:text="确认"
+            android:textColor="#FFFFFF"
+            android:textSize="14sp"
+            android:visibility="gone" />
     </LinearLayout>
 
     <!-- 底部按钮区域 -->