FIR CFG: filter out variables declared inside lambdas more eagerly

compiler/testData/diagnostics/tests/smartCasts/variables/capturedWithControlJumps.fir.kt

@@ -1,4 +1,5 @@
 // ISSUE: KT-50092
+// SKIP_TXT
 
 fun test1() {
     var x: String? = "..."
@@ -53,3 +54,15 @@ fun test4() {
         lambda<!UNNECESSARY_SAFE_CALL!>?.<!>invoke()
     }
 }
+
+fun test5() {
+    var lambda: (() -> Int)? = null
+    for (i in 1..2) {
+        lambda = {
+            var x: String?
+            x = ""
+            x.length // ok
+        }
+    }
+    lambda?.invoke()
+}

compiler/testData/diagnostics/tests/smartCasts/variables/capturedWithControlJumps.kt

@@ -1,4 +1,5 @@
 // ISSUE: KT-50092
+// SKIP_TXT
 
 fun test1() {
     var x: String? = "..."
@@ -53,3 +54,15 @@ fun test4() {
         lambda?.invoke()
     }
 }
+
+fun test5() {
+    var lambda: (() -> Int)? = null
+    for (i in 1..2) {
+        lambda = {
+            var x: String?
+            x = ""
+            <!DEBUG_INFO_SMARTCAST!>x<!>.length // ok
+        }
+    }
+    lambda?.invoke()
+}

compiler/testData/diagnostics/tests/smartCasts/variables/capturedWithControlJumps.txt

@@ -1,6 +0,0 @@
-package
-
-public fun test1(): kotlin.Unit
-public fun test2(): kotlin.Unit
-public fun test3(): kotlin.Unit
-public fun test4(): kotlin.Unit