Support qualified wildcard options in function arguments

[osipovartem]

Summary

• parse parenthesized qualified wildcard arguments such as SEARCH((lines.*), 'king')
• preserve Snowflake ILIKE and EXCLUDE options on qualified function wildcards
• represent qualified wildcard options explicitly in FunctionArgExpr
• add Snowflake dialect parser regression coverage for plain, ILIKE, and EXCLUDE forms

Validation

• cargo +1.94.0 test --test sqlparser_snowflake parse_parenthesized_qualified_wildcard_function_argument
• cargo +1.94.0 clippy --all-targets --all-features -- -D warnings
• cargo +1.94.0 fmt --all -- --check