style(core): fix (hopefully) the weird clippy warning about HOMESCREEN_TOIF_X_OFFSET

.github/workflows/core.yml

@@ -159,12 +159,6 @@ jobs:
       matrix:
         model: [T2T1, T2B1]
         asan: ${{ fromJSON(needs.param.outputs.asan) }}
-        # T2B1 fails due to rust clippy error which is hard to reproduce, see discussion here:
-        # https://github.com/trezor/trezor-firmware/pull/2196
-        # The problem might be in conflicting versions of clippy, let's see if this helps:
-        # https://github.com/trezor/trezor-firmware/issues/3337
-        exclude:
-          - model: T2B1
     env:
       TREZOR_MODEL: ${{ matrix.model == 'T2T1' && 'T' || matrix.model == 'T2B1' && 'R' || matrix.model }}
       ADDRESS_SANITIZER: ${{ matrix.asan == 'asan' && '1' || '0' }}

core/embed/rust/src/ui/model_tt/component/homescreen/render.rs

@@ -51,7 +51,7 @@ pub const HOMESCREEN_IMAGE_HEIGHT: i16 = HEIGHT;
 pub const HOMESCREEN_TOIF_SIZE: i16 = 144;
 pub const HOMESCREEN_TOIF_Y_OFFSET: i16 = 27;
 pub const HOMESCREEN_TOIF_X_OFFSET: usize =
-    ((WIDTH.saturating_sub(HOMESCREEN_TOIF_SIZE)) / 2) as usize;
+    ((WIDTH as usize).saturating_sub(HOMESCREEN_TOIF_SIZE as usize)) / 2;
 
 const HOMESCREEN_MAX_ICON_SIZE: i16 = 20;
 const NOTIFICATION_HEIGHT: i16 = 36;