Fix incorrect codeRates in JTuner JNI conversion

The FrontendStatus.getCodeRate() retrun type is int[], but FrontendInnerFec is long
type. The long term fix requires API changes.(Change the return type of
getCodeRate)

This is a short term fix corrects the issue for values within the int
range but will truncate larger FrontendInnerFec enum values

Bug: 402031649
Test: m
Flag: EXEMPT bug fix
Change-Id: I6e4c6f0ce0877ae53cd6ef5337afe1113ffe8b5f