[MERGE #1939 @leirocks] fix assertion on integrated block with page heap.
[MERGE #1939 @leirocks] fix assertion on integrated block with page heap.

Merge pull request #1939 from leirocks:9373903

currently all page heap allocations are done with large blocks. However, we don't support integration of large heap blocks. the complete fix should be that we support integration of large blocks. here just remove the assertion in case the allocation is from integrated page.

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