[ln882h_ble_tracker] Use the shared ble_device_base automation layer (#18089)

tests/component_tests/bk72xx_ble_tracker/config/test_automations.yaml

@@ -4,12 +4,17 @@ esphome:
     then:
       - bk72xx_ble_tracker.start_scan:
           continuous: true
+      # Bare form: restores the configured scan_parameters mode — no
+      # set_continuous emitted (asserted in the codegen test).
+      - bk72xx_ble_tracker.start_scan:
       - bk72xx_ble_tracker.stop_scan
 
 bk72xx:
   board: cb2s
 
 bk72xx_ble_tracker:
+  scan_parameters:
+    continuous: false
   on_ble_advertise:
     - mac_address:
         - AC:37:43:77:5F:4C

tests/component_tests/bk72xx_ble_tracker/test_automations_codegen.py

@@ -39,9 +39,15 @@ def test_trigger_codegen(
         "set_manufacturer_uuid128((uint8_t*)(const uint8_t[16]){0xCD,0xAB,0xCD,0xAB,"
         "0xCD,0xAB,0xCD,0xAB,0xCD,0xAB,0xCD,0xAB,0xCD,0xAB,0xCD,0xAB})" in main_cpp
     )
-    # scan-control actions: templatable continuous lambda + parented actions
+    # scan-control actions: templatable continuous lambda + parented actions.
+    # Exactly one set_continuous: the bare start_scan emits none, pinning the
+    # restore-configured-mode divergence from esp32 against a future default=.
+    assert main_cpp.count("->set_continuous(") == 1
     assert "startscanaction_id->set_continuous(" in main_cpp
     assert "stopscanaction_id->set_parent(" in main_cpp
+    # scan_parameters continuous: false reaches the YAML-mode setter, not the
+    # runtime override.
+    assert "->set_configured_continuous(false)" in main_cpp
     # Constructor call, not just the declaration: the parent argument is what
     # registers the trigger as a listener.
     assert re.search(

tests/component_tests/ln882h_ble_tracker/config/test_automations.yaml

@@ -13,6 +13,8 @@ ln882x:
   board: generic-ln882h
 
 ln882h_ble_tracker:
+  scan_parameters:
+    continuous: false
   on_ble_advertise:
     - mac_address:
         - AC:37:43:77:5F:4C

tests/component_tests/ln882h_ble_tracker/test_automations_codegen.py

@@ -40,10 +40,13 @@ def test_trigger_codegen(
     assert main_cpp.count("->set_continuous(") == 1
     assert "startscanaction_id->set_continuous(" in main_cpp
     assert "stopscanaction_id->set_parent(" in main_cpp
+    # scan_parameters continuous: false reaches the YAML-mode setter, not the
+    # runtime override.
+    assert "->set_configured_continuous(false)" in main_cpp
     # Constructor call, not just the declaration: the parent argument is what
     # registers the trigger as a listener.
     assert re.search(
-        r"new\(\w+\) ln882h_ble_tracker::BLEEndOfScanTrigger\(\w+\)", main_cpp
+        r"new\(\w+\) ble_device_base::BLEEndOfScanTrigger\(\w+\)", main_cpp
     )
 
     # Seven triggers register as listeners; an undercount silently drops the