Remove dependency injection from core module and data module from presentation-widget module

Includes side effects:
- No longer need to restart app for user agent string change to take effect
- parseAs extension function requires a Json instance in the calling context, which doesn't necessarily need to be the default one provided by Injekt

app/src/main/java/eu/kanade/tachiyomi/ui/webview/WebViewActivity.kt

@@ -92,7 +92,7 @@ class WebViewActivity : BaseActivity() {
     }
 
     private fun clearCookies(url: String) {
-        val cleared = network.cookieManager.remove(url.toHttpUrl())
+        val cleared = network.cookieJar.remove(url.toHttpUrl())
         logcat { "Cleared $cleared cookies for: $url" }
     }
 

app/src/main/java/eu/kanade/tachiyomi/ui/webview/WebViewScreenModel.kt

@@ -47,7 +47,7 @@ class WebViewScreenModel(
     }
 
     fun clearCookies(url: String) {
-        val cleared = network.cookieManager.remove(url.toHttpUrl())
+        val cleared = network.cookieJar.remove(url.toHttpUrl())
         logcat { "Cleared $cleared cookies for: $url" }
     }
 }