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/bytecodeText/capturedVarsOptimization/capturedInInlineOnly.kt

@@ -0,0 +1,10 @@
+// WITH_RUNTIME
+
+fun test() {
+    var x = 0
+    run { ++x }
+}
+
+// 0 NEW
+// 0 GETFIELD
+// 0 PUTFIELD