KT-5248 Don't wrap variable if it is captured only in inlined closures

Remove non-escaping Ref's on bytecode postprocessing pass.

compiler/testData/codegen/box/closures/capturedVarsOptimization/capturedInInlineOnlyIncrDecr.kt

@@ -0,0 +1,8 @@
+// WITH_RUNTIME
+
+fun box(): String {
+    var x = 0
+    run { x++ }
+    run { ++x }
+    return if (x == 2) "OK" else "Fail: $x"
+}