[fan] fix initial FanCall to properly set speed (#8277)

tests/integration/fixtures/host_mode_fan_preset.yaml

@@ -0,0 +1,34 @@
+esphome:
+  name: host-test
+
+host:
+
+api:
+
+logger:
+
+# Test fan with preset modes and speed settings
+fan:
+  - platform: template
+    name: "Test Fan with Presets"
+    id: test_fan_presets
+    speed_count: 5
+    preset_modes:
+      - "Eco"
+      - "Sleep"
+      - "Turbo"
+    has_oscillating: true
+    has_direction: true
+
+  - platform: template
+    name: "Test Fan Simple"
+    id: test_fan_simple
+    speed_count: 3
+    has_oscillating: false
+    has_direction: false
+
+  - platform: template
+    name: "Test Fan No Speed"
+    id: test_fan_no_speed
+    has_oscillating: true
+    has_direction: false