vulkan based filters regression

[haihao]

Summary of the bug:

A ffmpeg command using scale_vulkan works well with FFmpeg n6.0, but the same command doesn't work with git-master

How to reproduce:

% ffmpeg -y -init_hw_device vulkan=vk -f lavfi -i testsrc -vf 'format=yuv444p,hwupload,scale_vulkan=640:480,hwdownload,format=yuv444p' -f null -
ffmpeg version N-111626-g0ba719f726 Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 8 (Ubuntu 8.4.0-3ubuntu2)
  configuration: --prefix=/usr --libdir=/usr/lib/x86_64-linux-gnu --shlibdir=/usr/lib/x86_64-linux-gnu --enable-opencl --enable-libglslang --enable-vulkan
  libavutil      58. 14.100 / 58. 14.100
  libavcodec     60. 22.100 / 60. 22.100
  libavformat    60. 10.100 / 60. 10.100
  libavdevice    60.  2.101 / 60.  2.101
  libavfilter     9. 10.100 /  9. 10.100
  libswscale      7.  3.100 /  7.  3.100
  libswresample   4. 11.100 /  4. 11.100
MESA-INTEL: debug: anv_GetPhysicalDeviceFeatures2: ignored VkStructureType 1000316002
MESA-INTEL: debug: anv_GetPhysicalDeviceProperties2: ignored VkStructureType 1000316000
MESA-INTEL: debug: anv_GetPhysicalDeviceQueueFamilyProperties2: ignored VkStructureType 1000023012
MESA-INTEL: debug: anv_GetPhysicalDeviceQueueFamilyProperties2: ignored VkStructureType 1000023016
Input #0, lavfi, from 'testsrc':
  Duration: N/A, start: 0.000000, bitrate: N/A
  Stream #0:0: Video: wrapped_avframe, rgb24, 320x240 [SAR 1:1 DAR 4:3], 25 fps, 25 tbr, 25 tbn
Stream mapping:
  Stream #0:0 -> #0:0 (wrapped_avframe (native) -> wrapped_avframe (native))
Press [q] to stop, [?] for help
[Parsed_scale_vulkan_2 @ 0x55d3620cb2c0] Vulkan filtering requires that the VK_EXT_descriptor_buffer extension is supported!
[Parsed_scale_vulkan_2 @ 0x55d3620cb2c0] Failed to configure output pad on Parsed_scale_vulkan_2
[vf#0:0 @ 0x55d3620c5180] Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while filtering: Invalid argument
[out#0/null @ 0x55d3620c3740] Nothing was written into output file, because at least one of its streams received no packets.
frame=    0 fps=0.0 q=0.0 Lsize=       0kB time=N/A bitrate=N/A speed=N/A
Conversion failed!

ffmpeg version N-111626-g0ba719f726

built on Ubuntu 22.04.2 LTS