chore: update eslint, enable more rules and fix their findings (#39438)

Update eslint and its plugins, enable more rules and fix their findings:

1. `unicorn/no-unsafe-string-replacement` found that uploading a file
whose name contains `$&` inserted a broken markdown link, because
`String#replace` expands such patterns in the replacement string
2. `@typescript-eslint/require-await` removes `async` from functions
that never await
3. Plugin rules not covered by a preset are now listed explicitly

---------

Co-authored-by: bircni <bircni@icloud.com>

web_src/js/render/plugin.ts

@@ -1,3 +1,5 @@
+import type {Promisable} from '../types.ts';
+
 // there are 2 kinds of plugins:
 // * "inplace" plugins: render file content in-place, e.g. PDF viewer
 // * "frontend" plugins: render file content in a separate iframe by a huge frontend library (need to protect from XSS risks)
@@ -18,4 +20,4 @@ export type FrontendRenderOptions = {
   contentBytes(): Uint8Array<ArrayBuffer>;
 };
 
-export type FrontendRenderFunc = (opts: FrontendRenderOptions) => Promise<boolean>;
+export type FrontendRenderFunc = (opts: FrontendRenderOptions) => Promisable<boolean>;

web_src/js/render/plugins/frontend-openapi-swagger.ts

@@ -4,9 +4,9 @@ import {initSwaggerUI} from '../swagger.ts';
 // HINT: SWAGGER-CSS-IMPORT: these styles are for the render only.
 import '../../../css/swagger-render.css';
 
-export const frontendRender: FrontendRenderFunc = async (opts): Promise<boolean> => {
+export const frontendRender: FrontendRenderFunc = (opts) => {
   try {
-    await initSwaggerUI(opts.container, {specText: opts.contentString()});
+    initSwaggerUI(opts.container, {specText: opts.contentString()});
     return true;
   } catch (error) {
     console.error(error);

web_src/js/render/plugins/frontend-viewer-3d.ts

@@ -15,7 +15,7 @@ solid SimpleTriangle
 endsolid SimpleTriangle
 */
 
-export const frontendRender: FrontendRenderFunc = async (opts): Promise<boolean> => {
+export const frontendRender: FrontendRenderFunc = (opts) => {
   try {
     opts.container.style.height = `${window.innerHeight}px`;
     const bgColor = colord(getComputedStyle(document.body).backgroundColor).toRgb();

web_src/js/render/swagger.ts

@@ -15,7 +15,7 @@ function syncDarkModeClass(): void {
   document.documentElement.classList.toggle('dark-mode', isDark);
 }
 
-export async function initSwaggerUI(container: HTMLElement, opts: {specText: string}): Promise<void> {
+export function initSwaggerUI(container: HTMLElement, opts: {specText: string}): void {
   // swagger-ui has built-in dark mode triggered by html.dark-mode class
   syncDarkModeClass();
   window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', syncDarkModeClass);