[1.6>master] [MERGE #3088 @Cellule] 2.0:Change some asserts to failfast in tagged templatestring map handling and protect from reentrancy
[1.6>master] [MERGE #3088 @Cellule] 2.0:Change some asserts to failfast in tagged templatestring map handling and protect from reentrancy

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