[MERGE #5930 @meg-gupta] OS#18874701: Clear valuetype of profiledInstr, when it transforms from LdElemI_A to Ld_A
[MERGE #5930 @meg-gupta] OS#18874701: Clear valuetype of profiledInstr, when it transforms from LdElemI_A to Ld_A

Merge pull request #5930 from meg-gupta:vtbug

Otherwise we may end up reading the profiled value type stored in the union (instr->AsProfiledInstr()->u) incorrectly.

Microsoft/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore