feat(mobile): admin, settings picker and place sheets in the common style, all sheets on glass

Admin sheets: their frame draws the icon tile header (an icon per sheet, the
plugin sheets' icons moved out of the title into the tile), the soft scroll
edge and 42 px footer buttons; admin fields use the sheets' eyebrow labels
and round inputs. The settings picker, the bulk category sheet and the save
to list sheet get the common header (TileHeader may now leave out the icon
for a plain picker). Every phone sheet now uses the glass material, as the
trip settings do; it stays 94 % opaque, so forms over the map remain
legible.

client/scripts/theme-baseline.json

@@ -201,7 +201,7 @@
   "mobile/screens/settings/MMobileNavCustomizer.tsx": 8,
   "mobile/screens/settings/MPhotoProvidersSection.tsx": 2,
   "mobile/screens/settings/MScopeGroupPicker.tsx": 5,
-  "mobile/screens/settings/MSetPickerSheet.tsx": 2,
+  "mobile/screens/settings/MSetPickerSheet.tsx": 1,
   "mobile/screens/settings/MSettings.tsx": 2,
   "mobile/screens/settings/MSettingsAbout.tsx": 5,
   "mobile/screens/settings/MSettingsAccount.tsx": 20,
@@ -216,9 +216,9 @@
   "mobile/screens/trip/MTripLoadingSplash.tsx": 2,
   "mobile/screens/trip/MTripShell.tsx": 9,
   "mobile/screens/trip/places/MPlacesBrowser.tsx": 10,
-  "mobile/screens/trip/places/MPlacesBulkCategorySheet.tsx": 4,
+  "mobile/screens/trip/places/MPlacesBulkCategorySheet.tsx": 2,
   "mobile/screens/trip/places/MPlacesFilterControls.tsx": 1,
-  "mobile/screens/trip/places/MPlacesSaveToCollectionSheet.tsx": 7,
+  "mobile/screens/trip/places/MPlacesSaveToCollectionSheet.tsx": 6,
   "mobile/screens/trip/places/MPlacesToursModeSwitch.tsx": 1,
   "mobile/screens/trip/plan/MPlanTimeline.tsx": 12,
   "mobile/screens/trip/plan/MPlanTimelineRows.tsx": 24,