[codegen] Fix floating point record equaliser semantics

[thswlsqls]

Purpose

fix #8532

• Generate Float.compare(...) == 0 and Double.compare(...) == 0 for floating-point RecordEqualiser fields.
• Use the same floating-point comparison in nested generated scalar equality.
• Disable raw BinaryRow.equals() / BinaryArray.equals() fast paths for compared type trees containing FLOAT or DOUBLE.
• Match map keys with generated equality when the key type tree contains floating-point fields.
• Keeps NaN, non-canonical NaN payloads, and signed-zero equality consistent with generated comparators after PR [codegen] Fix wrong sort order for float and double columns with nan #8295.

Tests

• Added EqualiserCodeGeneratorTest#testFloatingPointEqualiserMatchesJdkComparison for NaN, non-canonical NaN payloads, signed zero, infinities, nested arrays, map keys, null map keys, GenericRow, hybrid rows, and BinaryRow/BinaryRow.
• mvn -pl paimon-codegen -DwildcardSuites=none -DfailIfNoTests=false -Dtest=EqualiserCodeGeneratorTest#testFloatingPointEqualiserMatchesJdkComparison test passed, 1 test.
• mvn -pl paimon-codegen -DwildcardSuites=none -DfailIfNoTests=false -Dtest=EqualiserCodeGeneratorTest#testFloatingPointEqualiserMatchesJdkComparison clean install passed, including compile, checkstyle, spotless, shade, install, and the regression test in both surefire phases.