Change NV12Image flatbuffers definition #1441

Job	Run time
Analyze (CodeQL)	0s
Windows	7m 26s
macOS 14 (arm64/M1/M2)	3m 18s
Debian Bullseye (x86_64)	1m 20s
macOS 13 (x64)	4m 14s
Debian Bullseye (ARM 32-bit Raspberry Pi OS)	5m 39s
Debian Bullseye (ARM 64-bit Raspberry Pi OS)	5m 10s
Debian Bookworm (x86_64)	1m 17s
Ubuntu 22.04 LTS (x86_64)	1m 24s
Ubuntu 24.04 LTS (x86_64)	1m 16s
Debian Bookworm (ARM 32-bit Raspberry Pi OS)	5m 56s
Debian Bookworm (ARM 64-bit Raspberry Pi OS)	5m 36s
Fedora 40 (x86_64)	2m 38s
Arch Linux (x86_64)	1m 44s
Publish Releases	0s
	46m 58s

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