SNOW-3192256: Support XML infer schema#4123

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sfc-gh-mayliu wants to merge 8 commits intomainfrom

mayliu-SNOW-3192256-xml-inferSchema

Commits on Mar 14, 2026

Support XML infer schema; fix custom schema casting on complex types; fix attribute and value structType across children elements
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fix tests
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Commits on Mar 15, 2026

add test coverage
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Support XML type-mismatch PERMISSIVE behavior necessary for inferSchema to execute; add bernoulli sampling for samplingRatio and tests
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Commits on Mar 16, 2026

guard XML inferSchema with _is_snowpark_connect_compatible_mode flag
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Commits on Mar 17, 2026

Commits on Mar 18, 2026

test coverage
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