KT-32368 Rework Inline hints settings // special case for lambda hints

Lambda hints are placed at the end of a line in such a way that user
can't move the caret behind it. Unfortunately, hint provision
infrastructure doesn't take this detail into account.
As a workaround, KotlinLambdasHintsProvider now returns an empty result
(sink) to the outer infrastructure and accesses editor's inlay model
itself.

generators/tests/org/jetbrains/kotlin/generators/tests/GenerateTests.kt

@@ -882,10 +882,6 @@ fun main(args: Array<String>) {
                 model("codeInsight/codeVision")
             }
 
-            testClass<AbstractKotlinLambdasHintsProvider> {
-                model("codeInsight/hints/lambda")
-            }
-
             testClass<AbstractKotlinSuspendingCallHintsProviderTest> {
                 model("codeInsight/hints/suspending")
             }