Wrong sort during resolving StringBuilder

[Damtev]

Description

During resolving StringBuilder, the wrong sort is used for the index in the array for the field value.

To Reproduce

Generate a test for the following code:

public void stringBuilderAsParameterExample(StringBuilder sb) {
    UtMock.assume(sb != null);
}

Expected behavior

Tests are generated correctly.

Actual behavior

An error occurred during the generation (see attached trace).

Visual proofs (screenshots, logs, images)

Failed requirement.java.lang.IllegalArgumentException: Failed requirement.
	at org.utbot.engine.pc.UtArraySelectExpression.<init>(UtExpression.kt:206)
	at org.utbot.engine.pc.UtSolverKt.select(UtSolver.kt:92)
	at org.utbot.engine.UtAbstractStringBuilderWrapper.value(Strings.kt:228)
	at org.utbot.engine.Resolver.resolveObject(Resolver.kt:470)
	at org.utbot.engine.Resolver.resolveReferenceValue(Resolver.kt:440)
	at org.utbot.engine.Resolver.resolveModel(Resolver.kt:411)
	at org.utbot.engine.Resolver.internalResolveModel(Resolver.kt:246)
	at org.utbot.engine.Resolver.resolveModels$utbot_framework(Resolver.kt:217)

Environment

Engine tests.

Additional context

No additional context.