tensilelite: add per-tensor LDSTrInstA/LDSTrInstB overrides

[leowu2017]

Add LDSTrInstA and LDSTrInstB solution parameters that let each tensor (A/B) independently override the global LDSTrInst (LDS transpose instruction) setting. Both default to -1 ("not specified"), meaning they follow LDSTrInst, matching the existing NonTemporal/TemporalHint per-tensor override convention.

• Common/ValidParameters.py: register LDSTrInstA/LDSTrInstB with valid values [-1, False, True].
• Common/GlobalParameters.py: default both to -1 in defaultBenchmarkCommonParameters.
• SolutionStructs/Solution.py: resolve LDSTrInstA/LDSTrInstB from -1 to LDSTrInst early in assignDerivedParameters, and use the resolved per-tensor values (instead of the global LDSTrInst) when deriving enableLDSTrA/enableLDSTrB and in the other three call sites that previously read the global LDSTrInst directly (LocalReadVectorWidthA/B checks and the ExpandPointerSwap reject).

Motivation

Technical Details

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🧪 Unit Test	⚠️ Warning	Error: Source/code files changed without an accompanying unit test. Expected: add at least one test file named like test_<name>.py / test_<name>.cpp (or <name>_test.*). Current: code file(s) changed: projects/hipblaslt/tensilelite/Tensile/Common/GlobalParameters.py, projects/hipblaslt/tensilelite/Tensile/Common/ValidParameters.py, projects/hipblaslt/tensilelite/Tensile/SolutionStructs/Solution.py; no test file found
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