fix: Fix assert check in AbstractTestExpressionInterpreter

[pdabre12]

Description

Fix assert check in AbstractTestExpressionInterpreter.

Motivation and Context

Impact

No impact

Test Plan

CI

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[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Fixes an incorrect self-comparison in the expression interpreter test helper so that constant expressions are compared against each other correctly.

File-Level Changes

Change	Details	Files
Correct constant-expression comparison in assertRowExpressionEvaluationEquals helper.	Keep early return when both left and right are null constant values. Maintain assertion that right is a ConstantExpression when left is a ConstantExpression. Fix the value comparison to pass left constant value as the expected value and right constant value as the actual value instead of comparing the left value to itself.	presto-main-base/src/test/java/com/facebook/presto/sql/expressions/AbstractTestExpressionInterpreter.java

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[pdabre12]

@tdcmeehan Can you please have a look?

[sourcery-ai]

Hey - I've reviewed your changes and they look great!

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