tippy: Use namespace import for tippy.js.

Names like “delegate”, “Instance”, “Placement”, “Props”, and
“ReferenceElement” are much too generic to make sense as named
imports.

The downside is that we now need to write tippy.default(…) instead of
tippy(…) (because ES module namespace objects cannot be callable), but
that cost is worthwhile.

Signed-off-by: Anders Kaseorg <anders@zulip.com>

web/src/drafts.ts

@@ -2,7 +2,7 @@ import {subDays} from "date-fns";
 import $ from "jquery";
 import _ from "lodash";
 import assert from "minimalistic-assert";
-import tippy from "tippy.js";
+import * as tippy from "tippy.js";
 import {z} from "zod";
 
 import render_confirm_delete_all_drafts from "../templates/confirm_dialog/confirm_delete_all_drafts.hbs";
@@ -364,7 +364,7 @@ export function restore_message(draft: LocalStorageDraft): ComposeArguments {
 
 function draft_notify(): void {
     // Display a tooltip to notify the user about the saved draft.
-    const instance = tippy(".top_left_drafts .unread_count", {
+    const instance = tippy.default(".top_left_drafts .unread_count", {
         content: $t({defaultMessage: "Saved as draft"}),
         arrow: true,
         placement: "right",