[tinyusb] Reject logger.hardware_uart: USB_CDC (#16417)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/components/tinyusb/test.esp32-s2-idf.yaml

@@ -1 +1,6 @@
 <<: !include common.yaml
+
+# S2 defaults logger to USB_CDC, which conflicts with tinyusb on the shared
+# USB OTG peripheral; route the logger to UART0 so the fixture builds.
+logger:
+  hardware_uart: UART0

tests/components/usb_cdc_acm/test.esp32-s2-idf.yaml

@@ -1,5 +1,10 @@
 <<: !include tinyusb_common.yaml
 
+# S2 defaults logger to USB_CDC, which conflicts with tinyusb on the shared
+# USB OTG peripheral; route the logger to UART0 so the fixture builds.
+logger:
+  hardware_uart: UART0
+
 usb_cdc_acm:
   interfaces:
     - id: usb_cdc_acm1