Relieve memory usage criteria on batch size 2 during adaptive_bs for otx 2.3

[eunwoosh]

Summary

Same as #4009 but for otx 2.3
adpative_bs decides whether batch size is available conservatively. So even if some batch size doesn't make OOM, adaptive_bs can refuse to use it if it uses most of memory.
It's same to batch size 2, but it's better to try it if it doesn't make OOM because the only left thing to do is just raising an error if not.
So, this PR changes adaptive_bs to allow to return batch size 2 if it doesn't make OOM and use most of memory.

How to test

Checklist

• I have added unit tests to cover my changes.​
• I have added integration tests to cover my changes.​
• I have ran e2e tests and there is no issues.
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• I have updated the documentation in my target branch accordingly (e.g., documentation in develop).
• I have linked related issues.

License

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  Feel free to contact the maintainers if that's a concern.
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# Copyright (C) 2024 Intel Corporation
# SPDX-License-Identifier: Apache-2.0

[kprokofi]

There is no need to duplicate PRs from releases2.2 to releases2.3. We will perform one back merge PR after releases2.2 is stable.