chore: narrow ParamsDeviceTracker type to 'android' only

ws-scrcpy-web is goog-only — iOS support was intentionally dropped long
before this fork (related to WdaStatus.ts, removed in the dead-code
sweep earlier this session). The 'android' | 'ios' union was vestigial
upstream-compat typing. Narrowing to 'android' also collapses the dead
branch in BaseDeviceTracker.parseParameters that accepted 'ios' and
would have fed it into code that only handles 'android'.

0 tsc errors, 89/89 tests pass.

Author: bilbospocketses

src/app/client/BaseDeviceTracker.ts

@@ -102,7 +102,7 @@ export abstract class BaseDeviceTracker<DD extends BaseDeviceDescriptor, TE exte
     public static parseParameters(params: URLSearchParams): ParamsDeviceTracker {
         const typedParams = super.parseParameters(params);
         const type = Util.parseString(params, 'type', true);
-        if (type !== 'android' && type !== 'ios') {
+        if (type !== 'android') {
             throw Error('Incorrect type');
         }
         return { ...typedParams, type };

src/types/ParamsDeviceTracker.ts

@@ -1,5 +1,5 @@
 import type { ParamsBase } from './ParamsBase';
 
 export interface ParamsDeviceTracker extends ParamsBase {
-    type: 'android' | 'ios';
+    type: 'android';
 }