[ld2410] Use register_apply_action for bluetooth_password.set (#19667)

tests/components/ld2410/common-actions.yaml

@@ -0,0 +1,10 @@
+button:
+  - platform: template
+    name: LD2410 Actions
+    on_press:
+      - bluetooth_password.set:
+          id: my_ld2410
+          password: HiLink
+      - bluetooth_password.set:
+          id: my_ld2410
+          password: !lambda return "HiLink";

tests/components/ld2410/test-actions.esp8266-ard.yaml

@@ -0,0 +1,8 @@
+substitutions:
+  tx_pin: GPIO0
+  rx_pin: GPIO2
+
+packages:
+  uart: !include ../../test_build_components/common/uart/esp8266-ard.yaml
+  ld2410: !include common.yaml
+  actions: !include common-actions.yaml