fix(web-ui): render Accounts schema node properly (#35380)

Co-authored-by: stakeswky <64798754+stakeswky@users.noreply.github.com>
Co-authored-by: liuxiaopai-ai <73659136+liuxiaopai-ai@users.noreply.github.com>
Co-authored-by: Tak Hoffman <781889+Takhoffman@users.noreply.github.com>

ui/src/ui/config-form.browser.test.ts

@@ -427,17 +427,35 @@ describe("config form renderer", () => {
     expect(analysis.unsupportedPaths).not.toContain("channels");
   });
 
-  it("flags additionalProperties true", () => {
+  it("treats additionalProperties true as editable map fields", () => {
     const schema = {
       type: "object",
       properties: {
-        extra: {
+        accounts: {
           type: "object",
           additionalProperties: true,
         },
       },
     };
     const analysis = analyzeConfigSchema(schema);
-    expect(analysis.unsupportedPaths).toContain("extra");
+    expect(analysis.unsupportedPaths).not.toContain("accounts");
+
+    const onPatch = vi.fn();
+    const container = document.createElement("div");
+    render(
+      renderConfigForm({
+        schema: analysis.schema,
+        uiHints: {},
+        unsupportedPaths: analysis.unsupportedPaths,
+        value: { accounts: { default: { enabled: true } } },
+        onPatch,
+      }),
+      container,
+    );
+
+    const removeButton = container.querySelector(".cfg-map__item-remove");
+    expect(removeButton).not.toBeNull();
+    removeButton?.dispatchEvent(new MouseEvent("click", { bubbles: true }));
+    expect(onPatch).toHaveBeenCalledWith(["accounts"], {});
   });
 });

ui/src/ui/views/config-form.analyze.ts

@@ -79,7 +79,8 @@ function normalizeSchemaNode(
     normalized.properties = normalizedProps;
 
     if (schema.additionalProperties === true) {
-      unsupported.add(pathLabel);
+      // Treat `true` as an untyped map schema so dynamic object keys can still be edited.
+      normalized.additionalProperties = {};
     } else if (schema.additionalProperties === false) {
       normalized.additionalProperties = false;
     } else if (schema.additionalProperties && typeof schema.additionalProperties === "object") {