running with different base href causes crash during connection

[jonahwilliams]

Flutter crash report.
Please report a bug at https://github.com/flutter/flutter/issues.

## command

flutter run -d chrome

## exception

StateError: Bad state: No element


#0      List.last (dart:core-patch/growable_array.dart:337:5)
#1      AppInspector._initialize (package:dwds/src/debugging/inspector.dart:90:35)
<asynchronous suspension>
#2      AppInspector.initialize (package:dwds/src/debugging/inspector.dart:156:5)
<asynchronous suspension>
#3      ChromeProxyService.createIsolate (package:dwds/src/services/chrome_proxy_service.dart:188:18)
<asynchronous suspension>

To reproduce flutter create a new app, and change the base href in web/index.html from / to /foo/.

[grouma]

This seems to be a dupe of flutter/flutter#69964