ux v1.30.4: Escape closes all dialogs

- Esc closes the topmost dialog: opening/device info, icon rules, general
  settings, marker dialog, opening editor, space dialog (abandons import
  queue like Cancel); draw-undo via Esc preserved with dialog priority
- smoke_esc_dialogs.mjs; TESTING/CHANGELOG same-commit

custom_components/houseplan/manifest.json

@@ -16,5 +16,5 @@
   "issue_tracker": "https://github.com/Matysh/houseplan-card/issues",
   "requirements": [],
   "single_config_entry": true,
-  "version": "1.30.3"
+  "version": "1.30.4"
 }