[FIR] Restore variable fixation direction in call completion

Several tests are affected by the usage of fixation direction calculator in FIR.
Restored to mimimize test data changes.

It is unnecessary in FE10 because a type variable with unknown type
is inferred into an error type, but affects test data in FIR where
Nothing/Any is selected by direction (as a temporary measure).

CR candidate in spec test is Unresolved in FIR because top-level CRs are resolved as call arguments.
Resolution ambiguity is also present in FE10 when CR is wrapped into an id call.

compiler/testData/diagnostics/tests/inference/completion/anonymousFunction.fir.kt

@@ -19,6 +19,6 @@ fun testFunctions() {
 
 fun testNestedCalls() {
     id<String>(inferFromLambda { materialize() })
-    <!INAPPLICABLE_CANDIDATE!>id<!><String>(inferFromLambda(fun() = materialize()))
-    <!INAPPLICABLE_CANDIDATE!>id<!><String>(inferFromLambda2(fun() = materialize()))
+    id<String>(inferFromLambda(fun() = materialize()))
+    id<String>(inferFromLambda2(fun() = materialize()))
 }

compiler/testData/diagnostics/tests/inference/expectedTypeAdditionalTest.fir.kt

@@ -7,8 +7,7 @@ fun <T> foo() = foo() as T
 
 fun <T> foo2(): T = TODO()
 
-// TODO: "not enough information" should be reported on foo2() instead
-val test = foo2().<!UNRESOLVED_REFERENCE!>plus<!>("") as String
+val test = foo2().plus("") as String
 
 fun <T> T.bar() = this
 val barTest = "".bar() as Number

compiler/testData/diagnostics/tests/inference/simpleLambdaInCallWithAnotherLambdaWithBuilderInference.fir.kt

@@ -0,0 +1,20 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER -DEPRECATION -EXPERIMENTAL_IS_NOT_ENABLED -UNUSED_VARIABLE
+// WITH_RUNTIME
+
+import kotlin.experimental.ExperimentalTypeInference
+
+@UseExperimental(ExperimentalTypeInference::class)
+fun <R> combined(
+    check: () -> Unit,
+    @BuilderInference block: TestInterface<R>.() -> Unit
+): R = TODO()
+
+interface TestInterface<R> {
+    fun emit(r: R)
+}
+
+fun test() {
+    val ret = combined({ }) {
+        <!INAPPLICABLE_CANDIDATE!>emit<!>(1)
+    }
+}

compiler/testData/diagnostics/tests/inference/simpleLambdaInCallWithAnotherLambdaWithBuilderInference.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_PARAMETER -DEPRECATION -EXPERIMENTAL_IS_NOT_ENABLED -UNUSED_VARIABLE
 // WITH_RUNTIME