[lldb] Immediately connect in webinspector-wasm (#196368)
Call `EnsureConnected` in the `PlatformWebInspectorWasm` ctor so the
platform reports being connected after selecting in. The lazy approach
resulted in confusion due to the "Connected: no" in the `platform
select` output:
```
(lldb) platform select webinspector-wasm
Platform: webinspector-wasm
Connected: no
```
