tarantool / tarantool / 22177551240

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sql: throw duplicate column error for a view

This patch fixes the bug: instruction
box.execute([[CREATE TABLE t (a INTEGER PRIMARY KEY, a INTEGER);]])
and instruction
box.execute([[CREATE VIEW v AS SELECT 1 AS a, 1 AS a;]])
have different behaviors.
Now box.execute([[CREATE VIEW v as VIEW AS SELECT 1 AS a, 1 AS a;]])
returns an error: Space field 'a' is duplicate.

Closes #4545

NO_DOC=bugfix

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