Extract Function: Add backticks to non-identifiers and references originally surrounded in backticks

#KT-8192 Fixed

idea/testData/refactoring/extractFunction/parameters/misc/idWithBackticks.kt.after

@@ -0,0 +1,10 @@
+// PARAM_TYPES: kotlin.Int
+// PARAM_DESCRIPTOR: val i: kotlin.Int defined in test
+fun test() {
+    val `i` = 0
+    __dummyTestFun__(`i`)
+}
+
+private fun __dummyTestFun__(`i`: Int) {
+    `i`plus i
+}