Vulkan: Fix AA when rescaling.

src/video_core/renderer_vulkan/vk_blit_screen.cpp

@@ -614,7 +614,7 @@ void VKBlitScreen::CreateSampler() {
         .pNext = nullptr,
         .flags = 0,
         .magFilter = VK_FILTER_LINEAR,
-        .minFilter = VK_FILTER_NEAREST,
+        .minFilter = VK_FILTER_LINEAR,
         .mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR,
         .addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER,
         .addressModeV = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER,