Remove redundant curly braces in string templates on inline

idea/testData/quickfix/deprecatedSymbolUsage/argumentSideEffects/complexExpressionNotUsed4Runtime.kt.after

@@ -10,7 +10,7 @@ fun newFun(): Int = 0
 
 fun foo(): Int {
     bar()
-    <caret>return newFun()
+    return <caret>newFun()
 }
 
 fun bar(): Int? = 0

idea/testData/refactoring/inline/function/InStringTemplates.kt

@@ -0,0 +1,14 @@
+class X(val v: Int) {
+    fun <caret>foo() {
+        println("foo()")
+        return v
+    }
+}
+
+fun X.f1() {
+    println("Value: ${foo()}")
+}
+
+fun f2(x: X) {
+    println("Value: ${x.foo()}")
+}

idea/testData/refactoring/inline/function/InStringTemplates.kt.after

@@ -0,0 +1,12 @@
+class X(val v: Int) {
+}
+
+fun X.f1() {
+    println("foo()")
+    println("Value: $v")
+}
+
+fun f2(x: X) {
+    println("foo()")
+    println("Value: ${x.v}")
+}