v1.2.2: Android Start crash fix + google_ip preservation + chromewebstore SNI

Three user-facing fixes:

- Android Start crash in google_only mode (#73): every early-return
  path in startEverything now satisfies Android 8+'s foreground-service
  contract by calling startForeground before stopSelf. Previously if
  you opened the app, selected google_only mode, and tapped Connect
  without filling deployment ID + auth key (which google_only doesn't
  need anyway), the service crashed with
  ForegroundServiceDidNotStartInTimeException. Also gated the
  deployment-ID requirement on mode == APPS_SCRIPT.

- google_ip auto-overwrite on Start (#71): some carriers serve poisoned
  DNS for www.google.com that resolves but refuses TLS, clobbering
  working IPs users had manually set. DNS lookup now only fires when
  the field is blank — manual configs are preserved across Connect.
  Explicit "Auto-detect" button still refreshes on demand.

- chromewebstore.google.com added to DEFAULT_GOOGLE_SNI_POOL and
  DEFAULT_SNI_POOL (#75). Same family as the rest of the pool —
  wildcard cert, GFE-hosted.

Cargo.lock

@@ -2186,7 +2186,7 @@ dependencies = [
 
 [[package]]
 name = "mhrv-rs"
-version = "1.2.1"
+version = "1.2.2"
 dependencies = [
  "base64 0.22.1",
  "bytes",