FIR CFG: process called-in-place lambdas as loops

compiler/testData/diagnostics/tests/smartCasts/varnotnull/varCapturedInInlineClosure.kt

@@ -1,7 +1,7 @@
-// FIR_IDENTICAL
-// See also KT-7186
+// See also KT-7186 and forEachSafe.kt
+// Custom `forEach` has no contract but the lambda is inline (not crossinline) so smart cast is safe
 
-fun IntArray.forEachIndexed( op: (i: Int, value: Int) -> Unit) {
+inline fun IntArray.forEachIndexed( op: (i: Int, value: Int) -> Unit) {
     for (i in 0..this.size)
         op(i, this[i])
 }