fw: honor the Text Size setting in the launcher, add a notification text size

[gmarull]

The launcher picked its fonts and cell heights at compile time from PBL_DISPLAY_HEIGHT, so the Text Size setting (including the ExtraLarge tier on large-display platforms) never reached it while every other system menu followed the preference.

• Replace the display-height macros with a style table indexed by the preferred content size. Medium/Large carry the values previously used on small/large displays, which are the platform defaults, so nothing changes until the user touches the setting (existing goldens pass unchanged). ExtraLarge adds Gothic 28 bold / Gothic 24 in 60 px rect cells and 66/56 px round cells; the round row count is now derived from the cell heights.
• The saved scroll offset is tagged with the content size it was captured with, so Settings → change size → back re-centers the selection instead of restoring a stale offset. A phone-side change while the launcher is open rebuilds the menu layer in place.
• The battery and charging icons in the Settings glance scale with the tier (21×12 / 9×12 at ExtraLarge) and are centered on the subtitle instead of using a display-height offset. The charging bolt is now drawn from a per-row span table rather than the 7×9 PNG, pixel-identical at the existing size, so no new resources are needed.

"Before" is main; the Default column is pixel-identical before and after on both platforms.

	Default	Larger	Larger, scrolled
Before (qemu_emery)
After (qemu_emery)
Before (qemu_gabbro)		—
After (qemu_gabbro)

Settings glance while charging, Default vs Larger (qemu_emery):

Default	Larger

Fixes FIRM-4325

Notification text size (FIRM-4324)

Text Size started out under Notifications and only affected notifications; once it was generalized to the rest of the system UI there was no way to keep notifications at a different size than the menus. This adds a notification-specific preference (notifTextSize in the alerts preferences) with the same Smaller/Default/Larger choices plus Same as System, and brings the Text Size row back under Settings → Notifications. Only the notification layout resolves it, so the notification popup, reminders and the notifications app content follow it while everything else keeps following the system setting. The default is the platform default size, i.e. what the notification-only setting used to default to, so notifications look the same as before until either setting is changed.

Fixes FIRM-4324

Follow-ups from #1912

• Option menus (including the Text Size choosers) follow the user's size, with an ExtraLarge style (56 px single-line cell). Goldens added at Medium/ExtraLarge on obelix and gabbro; the platform-default goldens are unchanged.
• Notifications app list and empty state, alarms "limit reached" cell and the Bluetooth pairing hint follow the user's size. The round notifications list gets a 100 px focused cell at ExtraLarge, since the icon + title + subtitle stack no longer fits the 84 px one.
• Left pinned to the platform default on purpose: the selection/date/time pickers (their Large layouts assume ≥200 px displays), Music, Send Text's no-contacts screen, the text_layer default font, action-menu separator/crumbs, Timeline and the status bar.

Screenshots (qemu_emery)

System Text Size at Larger unless noted. "Before" is the previous tip of this PR (launcher commits only), so these isolate the notification and #1912 follow-up changes.

	Before	After
Settings → Notifications (defaults)
Notification Text Size chooser (defaults)	—
Text Size chooser (option menu) at Larger
Settings → Notifications at Larger
Notification, notification size at its default
Notification, notification size Smaller	—
Notification, notification size Same as System	—
Notifications app list
Settings → Bluetooth

Tested: full unit suite (333 tests), builds for qemu_emery, obelix, asterix, getafix and qemu_gabbro; manual checks on qemu_emery and qemu_gabbro. Not tested on hardware.

🤖 Generated with Claude Code