fix(52664): Assertion failure on completions for derived class with computed base property name (#52673)

tests/cases/fourslash/completionsClassMembers5.ts

@@ -0,0 +1,15 @@
+/// <reference path="fourslash.ts" />
+
+////export const SOME_CONSTANT = 'SOME_TEXT';
+////export class Base {
+////    [SOME_CONSTANT]: boolean;
+////}
+////export class Derived extends Base {
+////    /**/
+////}
+
+verify.baselineCompletions({
+    includeCompletionsWithInsertText: true,
+    includeCompletionsWithSnippetText: true,
+    includeCompletionsWithClassMemberSnippets: true,
+});