KT-37781 Add FUN_KEYWORD to MODIFIERS_ORDER

- This way it is inserted before visibility modifiers
- ^KT-37781 Fixed

compiler/psi/src/org/jetbrains/kotlin/psi/addRemoveModifier.kt

@@ -152,7 +152,7 @@ val MODIFIERS_ORDER = listOf(
     VARARG_KEYWORD,
     SUSPEND_KEYWORD,
     INNER_KEYWORD,
-    ENUM_KEYWORD, ANNOTATION_KEYWORD,
+    ENUM_KEYWORD, ANNOTATION_KEYWORD, FUN_KEYWORD,
     COMPANION_KEYWORD,
     INLINE_KEYWORD,
     INFIX_KEYWORD,

idea/testData/intentions/changeVisibility/private/noModifierListFunInterface.kt

@@ -0,0 +1,3 @@
+<caret>fun interface I {
+    fun test()
+}

idea/testData/intentions/changeVisibility/private/noModifierListFunInterface.kt.after

@@ -0,0 +1,3 @@
+private fun interface I {
+    fun test()
+}

idea/tests/org/jetbrains/kotlin/idea/intentions/IntentionTestGenerated.java

@@ -3343,6 +3343,11 @@ public class IntentionTestGenerated extends AbstractIntentionTest {
                 runTest("idea/testData/intentions/changeVisibility/private/noModifierListFun.kt");
             }
 
+            @TestMetadata("noModifierListFunInterface.kt")
+            public void testNoModifierListFunInterface() throws Exception {
+                runTest("idea/testData/intentions/changeVisibility/private/noModifierListFunInterface.kt");
+            }
+
             @TestMetadata("noModifierListInterface.kt")
             public void testNoModifierListInterface() throws Exception {
                 runTest("idea/testData/intentions/changeVisibility/private/noModifierListInterface.kt");