build(wio-tracker-l2): LVGL 9.2.2 -> 9.6.0

The triangle draw descriptor's colour fields lost their bg_ prefix and style
getters take an lv_part_t. 9.6 sizes flex containers through the layout, so
popups no longer shrink when pulled past their end: lvgl_patches.py goes.
The sim wipes its LVGL object cache when the library version changes.
Flash +73 KB.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

solo/wio-tracker-l2/platformio.ini

@@ -70,9 +70,6 @@ build_flags =
   -D NEARBY_MAX=64
   -D HIST_ARCHIVE          ; message history also on the SD card (ui-lvgl/HistoryStore.h)
   -D GPS_SKYVIEW           ; satellites / signal / DOPs for the GPS screen (helpers/sensors/GpsSky.h)
-extra_scripts =
-  ${esp32_base.extra_scripts}
-  pre:examples/companion_radio/ui-lvgl/lvgl_patches.py   ; fixes to LVGL itself
 build_src_filter = ${Wio_Tracker_L2.build_src_filter}
   +<helpers/esp32/*.cpp>
   +<helpers/ui/LGFXDisplay.cpp>
@@ -84,7 +81,7 @@ build_src_filter = ${Wio_Tracker_L2.build_src_filter}
 lib_deps =
   ${Wio_Tracker_L2.lib_deps}
   densaugeo/base64 @ ~1.4.0
-  lvgl/lvgl @ 9.2.2   ; pinned: bump deliberately, re-test on hardware
+  lvgl/lvgl @ 9.6.0   ; pinned: bump deliberately, re-test on hardware
   SD_MMC              ; map tiles on the microSD (framework libraries from here on)
   FS
   WiFi                ; on-device map download, live tiles, OTA
@@ -102,10 +99,11 @@ platform = ${esp32_base.platform}
 lib_deps =
   ${Wio_Tracker_L2.lib_deps}
   densaugeo/base64 @ ~1.4.0
-  lvgl/lvgl @ 9.2.2
+  lvgl/lvgl @ 9.6.0
   SD_MMC
   FS
   WiFi
   HTTPClient
   WiFiClientSecure
   Preferences
+