ci(usb/host): enable esp32s31 and esp32h4 for USB host examples

Remove the temporary esp32s31 disable from usb/host build-test rules.
Add esp32s31 and esp32h4 to the usb_host_msc and usb_host_lib pytest
matrices. Keep the tests temp-skipped in CI until usb_host_flash_disk
runners exist.

examples/peripherals/usb/host/msc/README.md

@@ -1,5 +1,5 @@
-| Supported Targets | ESP32-H4 | ESP32-P4 | ESP32-S2 | ESP32-S3 |
-| ----------------- | -------- | -------- | -------- | -------- |
+| Supported Targets | ESP32-H4 | ESP32-P4 | ESP32-S2 | ESP32-S3 | ESP32-S31 |
+| ----------------- | -------- | -------- | -------- | -------- | --------- |
 
 # USB Mass Storage Class example
 

examples/peripherals/usb/host/msc/pytest_usb_host_msc.py

@@ -1,15 +1,24 @@
-# SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
+# SPDX-FileCopyrightText: 2022-2026 Espressif Systems (Shanghai) CO LTD
 # SPDX-License-Identifier: CC0-1.0
 import pytest
 from pytest_embedded import Dut
 from pytest_embedded_idf.utils import idf_parametrize
 
 
-@pytest.mark.temp_skip_ci(targets=['esp32s2'], reason='lack of runners with usb_host_flash_disk tag')
+@pytest.mark.temp_skip_ci(
+    targets=['esp32s2', 'esp32s31', 'esp32h4'], reason='lack of runners with usb_host_flash_disk tag'
+)
 @pytest.mark.usb_host_flash_disk
 @idf_parametrize(
     'config,target',
-    [('default', 'esp32s2'), ('default', 'esp32s3'), ('default', 'esp32p4'), ('esp32p4_psram', 'esp32p4')],
+    [
+        ('default', 'esp32s2'),
+        ('default', 'esp32s3'),
+        ('default', 'esp32p4'),
+        ('esp32p4_psram', 'esp32p4'),
+        ('default', 'esp32s31'),
+        ('default', 'esp32h4'),
+    ],
     indirect=['config', 'target'],
 )
 def test_usb_host_msc_example(dut: Dut) -> None: