H264EncoderNvCodec tests fix

[mohammedzakikochargi]

IMPORTANT: All PRs must be linked to an issue (except for extremely trivial and straightforward changes).

Fixes #[Issue]

Description
Made all the H264EncoderNvCodec to use pipeline interface instead of step . As step interface is leading to NvResourceRegister issue.
Precise description of the changes in this pull request

Alternative(s) considered

Have you considered any alternatives? And if so, why have you chosen the approach in this PR?

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Checklist

• I have read the Contribution Guidelines
• I have written Unit Tests
• I have discussed my proposed solution with code owners in the linked issue(s) and we have agreed upon the general approach

[github-actions]

Test Results Linux_ARM64

    1 files  ±0      1 suites  ±0   11m 1s ⏱️ +2s
413 tests ±0  256 ✔️ ±0  157 💤 ±0  0 ❌ ±0 
256 runs  ±0    99 ✔️ ±0  157 💤 ±0  0 ❌ ±0 

Results for commit 1d889b6. ± Comparison against base commit 16b7548.

♻️ This comment has been updated with latest results.

[github-actions]

Test Results Linux-CudaT

    1 files  ±0      1 suites  ±0   10m 23s ⏱️ -1s
388 tests  - 1  228 ✔️ ±0  160 💤  - 1  0 ❌ ±0 
228 runs  ±0    68 ✔️ +1  160 💤  - 1  0 ❌ ±0 

Results for commit 1d889b6. ± Comparison against base commit 16b7548.

This pull request removes 1 test.

h264encodernvcodec_tests ‑ yuv420_640x360

♻️ This comment has been updated with latest results.

[github-actions]

Test Results Linux

    1 files  ±0      1 suites  ±0   10m 21s ⏱️ ±0s
294 tests ±0  226 ✔️ ±0  68 💤 ±0  0 ❌ ±0 
226 runs  ±0  158 ✔️ ±0  68 💤 ±0  0 ❌ ±0 

Results for commit 41b79fc. ± Comparison against base commit abddb05.

[github-actions]

Test Results Win-nocuda

    1 files  ±0      1 suites  ±0   10m 41s ⏱️ +3s
290 tests ±0  226 ✔️ ±0  64 💤 ±0  0 ❌ ±0 
226 runs  ±0  162 ✔️ ±0  64 💤 ±0  0 ❌ ±0 

Results for commit 41b79fc. ± Comparison against base commit abddb05.