[ET-VK] Fix VMA assertion caused by bool return type truncation

Differential Revision: D96151798

Pull Request resolved: #18105

Author: SS-JIA

backends/vulkan/runtime/vk_api/memory/Allocator.cpp

@@ -11,7 +11,8 @@
 namespace vkcompute {
 namespace vkapi {
 
-bool test_host_cached_available(VkPhysicalDevice physical_device) {
+VmaAllocationCreateFlags test_host_cached_available(
+    VkPhysicalDevice physical_device) {
   VkPhysicalDeviceMemoryProperties mem_props;
   vkGetPhysicalDeviceMemoryProperties(physical_device, &mem_props);