FIR CFG: check lambda concurrency by data flow, not control flow

var p: String? = something
    if (p != null) {
      foo(
        run { p = null; n() },
        // This lambda executes strictly after the one above by CFG,
        // but data flow for type inference comes from before the call
        // so p would get smartcasted if not forbidden.
	run { p.length; 123 }
      )
    }

compiler/fir/analysis-tests/testData/resolve/cfg/flowFromInplaceLambda2.fir.txt

@@ -127,7 +127,7 @@ FILE: flowFromInplaceLambda2.kt
                     ^ R|/n|<R|kotlin/Nothing?|>()
                 }
                 )), Int(1), R|kotlin/run|<R|kotlin/Int|>(<L> = run@fun <anonymous>(): R|kotlin/Int| <inline=Inline, kind=EXACTLY_ONCE>  {
-                    R|<local>/p|.R|kotlin/String.length|
+                    R|<local>/p|.<Inapplicable(UNSTABLE_SMARTCAST): kotlin/String.length>#
                     ^ Int(123)
                 }
                 ))