[esp32_rmt] Handle ESP32 variants without RMT hardware (#14001)

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

tests/components/remote_receiver/test.esp32-c2-idf.yaml

@@ -0,0 +1,12 @@
+remote_receiver:
+  id: rcvr
+  pin: GPIO2
+  dump: all
+  <<: !include common-actions.yaml
+
+binary_sensor:
+  - platform: remote_receiver
+    name: Panasonic Remote Input
+    panasonic:
+      address: 0x4004
+      command: 0x100BCBD

tests/components/remote_transmitter/test.esp32-c2-idf.yaml

@@ -0,0 +1,7 @@
+remote_transmitter:
+  id: xmitr
+  pin: GPIO2
+  carrier_duty_percent: 50%
+
+packages:
+  buttons: !include common-buttons.yaml