fix(36481): allow renaming private fields (#36499)

src/services/rename.ts

@@ -92,6 +92,7 @@ namespace ts.Rename {
     function nodeIsEligibleForRename(node: Node): boolean {
         switch (node.kind) {
             case SyntaxKind.Identifier:
+            case SyntaxKind.PrivateIdentifier:
             case SyntaxKind.StringLiteral:
             case SyntaxKind.NoSubstitutionTemplateLiteral:
             case SyntaxKind.ThisKeyword:

tests/cases/fourslash/renamePrivateFields.ts

@@ -0,0 +1,12 @@
+/// <reference path='fourslash.ts' />
+
+////class Foo {
+////   [|/**/#foo|] = 1;
+////
+////   getFoo() {
+////       return this.#foo;
+////   }
+////}
+
+goTo.marker("");
+verify.renameInfoSucceeded("#foo");

tests/cases/fourslash/renamePrivateFields1.ts

@@ -0,0 +1,11 @@
+/// <reference path='fourslash.ts' />
+
+////class Foo {
+////   [|[|{| "contextRangeIndex": 0 |}#foo|] = 1;|]
+////
+////   getFoo() {
+////       return this.[|#foo|];
+////   }
+////}
+
+verify.rangesWithSameTextAreRenameLocations("#foo");