IR: Do not capture variables from method calls in ClosureAnnotator

To call a method of a class, you never need to supply any values of
local variables (they would always be provided to the constructor).

compiler/testData/codegen/box/objects/objectLiteralInClass.kt

@@ -0,0 +1,17 @@
+// IGNORE_BACKEND_FIR: JVM_IR
+
+class C {
+
+    val s = "OK"
+
+    private val localObject = object {
+        fun getS(): String {
+            return s
+        }
+    }
+
+    fun ok(): String =
+        33.let { localObject.getS() }
+}
+
+fun box() = C().ok()