Fix two stale comments

esphome/components/bluetooth_connection/bluetooth_connection_hub.h

@@ -77,8 +77,9 @@ class BluetoothConnection final : public ble_device_base::GattClientListener {
   bool connected() const { return this->state_ == ClientState::ESTABLISHED; }
   void set_connection_type(ConnectionType ct) {
     this->connection_type_ = ct;
-    // The bluedroid backend branches on the type itself (prefer-params and
-    // the with-cache report at OPEN_EVT); the others ignore it.
+    // Both backends branch on the type before connecting (bluedroid picks
+    // prefer-params and the with-cache report at OPEN_EVT; rp2 picks the
+    // initiating parameters), so this must be set before the connect starts.
     this->backend_->set_connection_type(ct);
   }
   // Latched at discovery completion rather than read from the backend table:

tests/components/bluetooth_proxy/test.rp2040-ard.yaml

@@ -1,6 +1,7 @@
 # Full proxy on the rp2 BLE hub: active defaults to true here (esp32 parity),
 # so this compiles the BTstack GATT client backend with the default three
-# connection slots, exercising the btstack_memory_rp2.cpp pool --wrap link.
+# connection slots, exercising the rp2040_ble/btstack_memory.cpp pool --wrap
+# link.
 # No explicit ble_hub_id: the generated binding resolves the single declared
 # hub, and an inline id here would collide with rp2_ble_tracker's own fixture
 # once CI merges both components into one grouped rp2040-ard build (grouped