ui: network-monitor status on its own line + Refresh translation (v2.7.3)

The location line in the Phone-tab network monitor grew too long once the
status was appended (e.g. "262-01 · Germany · Telekom · Guest (roaming)
⛔ PLMN not allowed").  netStateRender now keeps the identity
(mcc-mnc · country · operator) on the first line and renders the status
elements (roaming tag + forbidden badge) in a block span on a second line;
a location without a status still renders on one line.

Also add the missing Russian translation for the monitor's Refresh button
(t() fell back to English): 'Refresh': 'Обновить'.

- frontend/index.html: two-line location render, LANG_RU Refresh, 2.7.3
- frontend/tests/netstate.test.js: pins the block-span layout and the
  one-line no-status case
- sw.js cache simple-v206; version trio 2.7.3

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "pysim-simple-server"
-version = "2.7.2"
+version = "2.7.3"
 description = "HTTP REST server wrapping pysim for the SIMple PWA"
 requires-python = ">=3.8"
 # pysim is a git-only dependency installed explicitly by setup.bat/setup.sh.