Remove non-array type hint when creating array.

[dnwpark]

When compiling pointers in a mutating statement (ie. insert and update), a type hint is provided so that empty sets and arrays can be meaningfully interpreted.

This PR fixes the following issues caused by the hint being propagated through the entire pointer compilation:

• assert failures when an untyped array is used anywhere in a non-array pointer's expression
• the wrong array type being used if an inner select statement also uses an untyped array

close #7356