Fixed selectOption position in build select query

[kikimor]

Q	A
Is bugfix?	✔️
New feature?	❌
Breaks BC?	❌, but may be for some users
Tests pass?	✔️

The existing implementation of select queries building has got a flaw. If you are using the distinct() the query may be built incorrectly. For example for Oracle it does not allow to use database hints together with a distinct(), because order are matter.

Query:
Table::find()->distinct()->select(['t.COLUMN'], '/*+INDEX ("t" I_UK)*/')
built as:
SELECT DISTINCT /*+INDEX ("t" I_UK)*/ "t"."COLUMN" FROM "SCHEMA"."TABLE"

After changes built this query as:
SELECT /*+INDEX ("t" I_UK)*/ DISTINCT "t"."COLUMN" FROM "SCHEMA"."TABLE"

[yii-bot]

Thank you for putting effort in the improvement of the Yii framework.
We have reviewed your pull request.

In order for the framework and your solution to remain stable in the future, we have a unit test requirement in place. Therefore we can only accept your pull request if it is covered by unit tests.

Could you add these please?

Thanks!

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This is an automated comment, triggered by adding the label pr:request for unit tests.