[NI] Add collecting forgotten type variables from callable references

#KT-35959 Fixed

compiler/testData/diagnostics/tests/callableReference/kt35959.fir.kt

@@ -0,0 +1,12 @@
+// !LANGUAGE: +NewInference
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+// ISSUE: KT-35959
+
+interface Expect<T>
+
+inline val <T> Expect<T>.and: Expect<T> get() = this
+infix fun <T> Expect<T>.and(assertionCreator: Expect<T>.() -> Unit): Expect<T> = this
+
+fun <K> id(x: K): K = x
+
+fun test(): Expect<Int>.(Expect<Int>.() -> Unit) -> Expect<Int> = id(Expect<Int>::and)

compiler/testData/diagnostics/tests/callableReference/kt35959.kt

@@ -0,0 +1,12 @@
+// !LANGUAGE: +NewInference
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+// ISSUE: KT-35959
+
+interface Expect<T>
+
+inline val <T> Expect<T>.and: Expect<T> get() = this
+infix fun <T> Expect<T>.and(assertionCreator: Expect<T>.() -> Unit): Expect<T> = this
+
+fun <K> id(x: K): K = x
+
+fun test(): Expect<Int>.(Expect<Int>.() -> Unit) -> Expect<Int> = id(Expect<Int>::and)

compiler/testData/diagnostics/tests/callableReference/kt35959.txt

@@ -0,0 +1,12 @@
+package
+
+public val </*0*/ T> Expect<T>.and: Expect<T>
+public fun </*0*/ K> id(/*0*/ x: K): K
+public fun test(): Expect<kotlin.Int>.(Expect<kotlin.Int>.() -> kotlin.Unit) -> Expect<kotlin.Int>
+public infix fun </*0*/ T> Expect<T>.and(/*0*/ assertionCreator: Expect<T>.() -> kotlin.Unit): Expect<T>
+
+public interface Expect</*0*/ T> {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}