Fix (unitest, interleaved pp and other bugs): re-adapt unitest for isp and adapt interleaved pp for no flash_attention

[li126com]

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Motivation

Please describe the motivation of this PR and the goal you want to achieve through this PR.

Modification

1. re-adapt weekly test for isp.
2. adapt interleaved pp for no fa.
3. fix bug in train.py for no fa.
4. re-adapt test output for no fa.
5. fix bug in build_unpack function.

BC-breaking (Optional)

Does the modification introduce changes that break the backward compatibility of the downstream repositories?
If so, please describe how it breaks the compatibility and how the downstream projects should modify their code to keep compatibility with this PR.

Use cases (Optional)

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Checklist

Before PR:

• Pre-commit or other linting tools are used to fix the potential lint issues.
• Bug fixes are fully covered by unit tests, the case that causes the bug should be added in the unit tests.
• The modification is covered by complete unit tests. If not, please add more unit test to ensure the correctness.
• The documentation has been modified accordingly, like docstring or example tutorials.

After PR:

• If the modification has potential influence on downstream or other related projects, this PR should be tested with those projects.
• CLA has been signed and all committers have signed the CLA in this PR.