[gps] Fix codegen deadlock when automations reference sibling sensors (#14365)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

esphome/components/gps/__init__.py

@@ -98,33 +98,25 @@ async def to_code(config):
     await cg.register_component(var, config)
     await uart.register_uart_device(var, config)
 
-    if latitude_config := config.get(CONF_LATITUDE):
-        sens = await sensor.new_sensor(latitude_config)
-        cg.add(var.set_latitude_sensor(sens))
+    # Pre-create all sensor variables so automations that reference
+    # sibling sensors don't deadlock waiting for unregistered IDs.
+    sensors = [
+        (cg.new_Pvariable(conf[CONF_ID]), conf, setter)
+        for key, setter in (
+            (CONF_LATITUDE, "set_latitude_sensor"),
+            (CONF_LONGITUDE, "set_longitude_sensor"),
+            (CONF_SPEED, "set_speed_sensor"),
+            (CONF_COURSE, "set_course_sensor"),
+            (CONF_ALTITUDE, "set_altitude_sensor"),
+            (CONF_SATELLITES, "set_satellites_sensor"),
+            (CONF_HDOP, "set_hdop_sensor"),
+        )
+        if (conf := config.get(key))
+    ]
 
-    if longitude_config := config.get(CONF_LONGITUDE):
-        sens = await sensor.new_sensor(longitude_config)
-        cg.add(var.set_longitude_sensor(sens))
-
-    if speed_config := config.get(CONF_SPEED):
-        sens = await sensor.new_sensor(speed_config)
-        cg.add(var.set_speed_sensor(sens))
-
-    if course_config := config.get(CONF_COURSE):
-        sens = await sensor.new_sensor(course_config)
-        cg.add(var.set_course_sensor(sens))
-
-    if altitude_config := config.get(CONF_ALTITUDE):
-        sens = await sensor.new_sensor(altitude_config)
-        cg.add(var.set_altitude_sensor(sens))
-
-    if satellites_config := config.get(CONF_SATELLITES):
-        sens = await sensor.new_sensor(satellites_config)
-        cg.add(var.set_satellites_sensor(sens))
-
-    if hdop_config := config.get(CONF_HDOP):
-        sens = await sensor.new_sensor(hdop_config)
-        cg.add(var.set_hdop_sensor(sens))
+    for sens, conf, setter in sensors:
+        await sensor.register_sensor(sens, conf)
+        cg.add(getattr(var, setter)(sens))
 
     # https://platformio.org/lib/show/1655/TinyGPSPlus
     # Using fork of TinyGPSPlus patched to build on ESP-IDF

tests/components/gps/common.yaml

@@ -1,8 +1,15 @@
 gps:
   latitude:
     name: "Latitude"
+    id: gps_lat
+    on_value:
+      then:
+        - logger.log:
+            format: "%.6f, %.6f"
+            args: [id(gps_lat).state, id(gps_long).state]
   longitude:
     name: "Longitude"
+    id: gps_long
   altitude:
     name: "Altitude"
   speed: