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[fix](Nereids) simplify range result wrong when reference is nullable #41356

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[fix](Nereids) simplify range result wrong when reference is nullable #41356

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morrySnow
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if reference is nullable and simplify result is boolean literal.
the real result should be:

IF(${reference} IS NULL, NULL, ${not_null_result})

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run buildall

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run buildall

@morrySnow
[fix](Nereids) simplify range result wrong when reference is nullable
e0fcbf5 
if reference is nullable and simplify result should be

IF(${reference} IS NULL, ${nullable_result}, ${not_null_result})
@morrySnow
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run buildall

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