Ignore VK_SUBOPTIMAL_KHR on the Android platform

This is returned whenever the device has been rotated, and can be safely ignored.

Fixes https://github.com/libsdl-org/SDL/issues/12950

(cherry picked from commit 00ffddece8f374ab8616aea1d5af5b91a00b875c)

src/gpu/vulkan/SDL_gpu_vulkan.c

@@ -10664,7 +10664,13 @@ static bool VULKAN_Submit(
             presentData->windowData->inFlightFences[presentData->windowData->frameCounter] = (SDL_GPUFence*)vulkanCommandBuffer->inFlightFence;
             (void)SDL_AtomicIncRef(&vulkanCommandBuffer->inFlightFence->referenceCount);
 
-            if (presentResult == VK_SUBOPTIMAL_KHR || presentResult == VK_ERROR_OUT_OF_DATE_KHR) {
+// On the Android platform, VK_SUBOPTIMAL_KHR is returned whenever the device is rotated. We'll just ignore this for now.
+#ifndef SDL_PLATFORM_ANDROID
+            if (presentResult == VK_SUBOPTIMAL_KHR) {
+                presentData->windowData->needsSwapchainRecreate = true;
+            }
+#endif
+            if (presentResult == VK_ERROR_OUT_OF_DATE_KHR) {
                 presentData->windowData->needsSwapchainRecreate = true;
             }
         } else {