KtSimpleNameReference: add root prefix support to bindToFqName function

idea/testData/copyPaste/imports/ClassResolvedToPackage.expected.kt

@@ -1,14 +1,8 @@
-// ERROR: Unresolved reference: a
-// ERROR: Unresolved reference: a
-// ERROR: Unresolved reference: a
 package to
 
 import a.a
 
-fun f(i: a.a) {
-    // TODO References shortening doesn't work for package vs class conflicts under the new resolution rules.
-    // After importing 'a.a', expression 'a.a' is unresolved (since 'a' becomes a class).
-    // 'package' in expression syntax might be required to fix it properly.
-    a.a
-    a.a()
+fun f(i: a) {
+    a
+    a()
 }

idea/testData/copyPaste/imports/ClassResolvedToPackage.kt

@@ -6,9 +6,6 @@ class a {
 }
 
 <selection>fun f(i: a) {
-    // TODO References shortening doesn't work for package vs class conflicts under the new resolution rules.
-    // After importing 'a.a', expression 'a.a' is unresolved (since 'a' becomes a class).
-    // 'package' in expression syntax might be required to fix it properly.
     a
     a()
 }</selection>

idea/testData/quickfix/autoImports/conflictWithClassIdentifier.kt

@@ -0,0 +1,7 @@
+// "Import" "true"
+// DISABLE-ERRORS
+class java
+
+fun test() {
+    Arrays<caret>
+}

idea/testData/quickfix/autoImports/conflictWithClassIdentifier.kt.after

@@ -0,0 +1,9 @@
+import java.util.Arrays
+
+// "Import" "true"
+// DISABLE-ERRORS
+class java
+
+fun test() {
+    Arrays<caret>
+}

idea/testData/quickfix/autoImports/conflictWithLocalIdentifier.kt

@@ -0,0 +1,7 @@
+// "Import" "true"
+// DISABLE-ERRORS
+
+fun test() {
+    val java = 42
+    Arrays<caret>
+}

idea/testData/quickfix/autoImports/conflictWithLocalIdentifier.kt.after

@@ -0,0 +1,9 @@
+import java.util.Arrays
+
+// "Import" "true"
+// DISABLE-ERRORS
+
+fun test() {
+    val java = 42
+    Arrays<caret>
+}

idea/testData/shortenRefs/type/ClassSameNameAsPackage.kt.after

@@ -1,5 +1,4 @@
 import same.same
 
-// todo must be: s: same
-fun f(s: same.same) {
+fun f(s: same) {
 }