fix: handle missing queried knowledge in model strategy

[s4kura (Iams4kura)]

Description

Use the queried-knowledge layer's shape-compatible ([], None) empty value when queried_knowledge is omitted from ModelMultiProcessEvolvingStrategy.implement_one_task.

This also adds an offline regression test that exercises the direct strategy call without making model or network requests.

Motivation and Context

Fixes #1461.

The method declares queried_knowledge as optional, but its None branch previously returned an empty list and then immediately indexed it as a two-item failed-knowledge tuple. Direct callers therefore received an incidental IndexError before prompt construction or backend invocation.

How Has This Been Tested?

• If you are adding a new feature, test on your own test scripts.

• python -m pytest -p no:cacheprovider -q test/scenarios/data_science/test_model_strategy_none_knowledge.py (1 passed)

• make test-offline (3 tests and 299 subtests passed)

• make lint

• make docs-gen

• make build

Screenshots of Test Results (if appropriate):

Not applicable; this is a deterministic unit-level regression.

Types of changes

• Fix bugs
• Add new feature
• Update documentation

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📚 Documentation preview 📚: https://RDAgent--1472.org.readthedocs.build/en/1472/

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