Fix the last frame drop in ST22

[DawidWesierski4]

In ST22, ensure the frame status changes to FREE
at the end of transmitting the last frame.
This change addresses the issue of the last frame
sometimes being omitted in ST22 streams.

[frankdjx]

And the MTL gtest CI is not working any more due to all host self-runner are removed for some special reason. So it can't merge any PR which changed the lib source code.

[DawidWesierski4]

Running test: ===========================================
./build/tests/KahawaiUfdTest --p_port 0000:b1:01.1 --r_port 0000:b1:01.2

Test passed in 22 seconds.

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Running test: ===========================================
./build/tests/KahawaiUfdTest --p_port 0000:b1:01.1 --r_port 0000:b1:01.2 --queue_mode shared

Test passed in 20 seconds.

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Running test: ===========================================
./build/tests/KahawaiUfdTest --p_port 0000:b1:01.1 --r_port 0000:b1:01.2 --queue_mode shared --udp_lcore

Test passed in 20 seconds.

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Running test: ===========================================
./build/tests/KahawaiUfdTest --p_port 0000:b1:01.1 --r_port 0000:b1:01.2 --rss_mode l3_l4

Test passed in 20 seconds.

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Running test: ===========================================
./build/tests/KahawaiTest --auto_start_stop --p_port 0000:b1:01.1 --r_port 0000:b1:01.2 --dma_dev 0000:00:01.0,0000:00:01.1 --gtest_filter=-St22_?x.*

Test passed in 781 seconds.

===========================================
Running test: ===========================================
./build/tests/KahawaiTest --auto_start_stop --p_port 0000:b1:01.1 --r_port 0000:b1:01.2 --rss_mode l3_l4 --pacing_way tsc --iova_mode pa --multi_src_port --gtest_filter=Main.:St20p:-ext

Test passed in 83 seconds.

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Running test: ===========================================
./build/tests/KahawaiTest --p_port kernel:lo --r_port kernel:lo --auto_start_stop --gtest_filter=St20p*

Test passed in 140 seconds.

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tests passed