Add additional sx127x lambda tests (#11793)

tests/components/sx127x/common.yaml

@@ -26,6 +26,15 @@ sx127x:
       - sx127x.send_packet:
           data: [0xC5, 0x51, 0x78, 0x82, 0xB7, 0xF9, 0x9C, 0x5C]
 
+number:
+  - platform: template
+    name: "SX127x Number"
+    id: my_number
+    optimistic: true
+    min_value: 0
+    max_value: 100
+    step: 1
+
 button:
   - platform: template
     name: "SX127x Button"
@@ -38,3 +47,5 @@ button:
         - sx127x.set_mode_rx
         - sx127x.send_packet:
             data: [0xC5, 0x51, 0x78, 0x82, 0xB7, 0xF9, 0x9C, 0x5C]
+        - sx127x.send_packet: !lambda |-
+            return {0x01, 0x02, (uint8_t)id(my_number).state};