Fix GH-8074: Wrong type inference of range() result

If either the first or second operand of `range()` may be a string, we
must not exclude the possibility that the result may be an arra

Fix GH-8074: Wrong type inference of range() result

If either the first or second operand of `range()` may be a string, we
must not exclude the possibility that the result may be an array of
longs.

Closes GH-8131.

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