Do not insert closing brace for string template between open brace and identifier (KT-11143)

#KT-11143 Fixed

idea/src/org/jetbrains/kotlin/idea/editor/KotlinTypedHandler.java

@@ -250,8 +250,13 @@ public class KotlinTypedHandler extends TypedHandlerDelegate {
             PsiElement previousElement = file.findElementAt(offset - 1);
             if (previousElement instanceof LeafPsiElement
                 && ((LeafPsiElement) previousElement).getElementType() == KtTokens.LONG_TEMPLATE_ENTRY_START) {
-                editor.getDocument().insertString(offset, "}");
-                return Result.STOP;
+                PsiElement currentElement = file.findElementAt(offset);
+
+                if (currentElement instanceof LeafPsiElement
+                    && ((LeafPsiElement) currentElement).getElementType() != KtTokens.IDENTIFIER) {
+                    editor.getDocument().insertString(offset, "}");
+                    return Result.STOP;
+                }
             }
         }
         else if (c == ':') {

idea/tests/org/jetbrains/kotlin/idea/editor/TypedHandlerTest.kt

@@ -65,7 +65,7 @@ class TypedHandlerTest : LightCodeInsightTestCase() {
     fun testTypeStringTemplateStartBeforeString() = doCharTypeTest(
             '{',
             """fun foo() { "$<caret>something" }""",
-            """fun foo() { "$dollar{}something" }"""
+            """fun foo() { "$dollar{something" }"""
     )
 
     fun testKT3575() = doCharTypeTest(