Fix yarn lint:types when matrix-js-sdk is not yarn linked. (#30612)

* Add missing dependencies on `@types` packages

Because we import the typescript source from matrix-js-sdk rather than the
`.d.ts` files, `tsc` ends up type-checking the js-sdk source. That means that
we need to have the `@types` packages that js-sdk needs.

* Add missing type definitions for `setInterval` and `setTimeout`

Our source assumes that `setTimeout` returns a number, not a
`Timeout`. If we `yarn link` js-sdk, then (somehow) we end up using the
definitions from there, but it's not really correct.

* Configure knip to ignore new deps

src/@types/global.d.ts

@@ -71,6 +71,13 @@ type ElectronChannel =
     | "serverSupportedVersions";
 
 declare global {
+    // use `number` as the return type in all cases for globalThis.set{Interval,Timeout},
+    // so we don't accidentally use the methods on NodeJS.Timeout - they only exist in a subset of environments.
+    // The overload for clear{Interval,Timeout} is resolved as expected.
+    // We use `ReturnType<typeof setTimeout>` in the code to be agnostic of if this definition gets loaded.
+    function setInterval(handler: TimerHandler, timeout: number, ...arguments: any[]): number;
+    function setTimeout(handler: TimerHandler, timeout: number, ...arguments: any[]): number;
+
     interface Window {
         mxSendRageshake: (text: string, withLogs?: boolean) => void;
         matrixLogger: typeof logger;