Stop deleting empty named import lists

Fixes #23892

src/harness/unittests/organizeImports.ts

@@ -243,6 +243,15 @@ D();
 import { F1, F2 } from "lib";
 import * as NS from "lib";
 import D from "lib";
+`,
+                },
+                libFile);
+
+            testOrganizeImports("Unused_Empty",
+                {
+                    path: "/test.ts",
+                    content: `
+import { } from "lib";
 `,
                 },
                 libFile);

src/services/organizeImports.ts

@@ -198,7 +198,9 @@ namespace ts.OrganizeImports {
             : namedImports[0];
 
         const newNamedImports = sortedImportSpecifiers.length === 0
-            ? undefined
+            ? newDefaultImport
+                ? undefined
+                : createNamedImports(emptyArray)
             : namedImports.length === 0
                 ? createNamedImports(sortedImportSpecifiers)
                 : updateNamedImports(namedImports[0].importClause.namedBindings as NamedImports, sortedImportSpecifiers);

tests/baselines/reference/organizeImports/Unused_Empty.ts

@@ -0,0 +1,7 @@
+// ==ORIGINAL==
+
+import { } from "lib";
+
+// ==ORGANIZED==
+
+import { } from "lib";