docs(tinyttf): remove file loading in the examples (#9266)

configs/ci/docs/lv_conf_docs.defaults

@@ -52,7 +52,6 @@ LV_USE_RLE      1
 LV_USE_QRCODE   1
 LV_USE_BARCODE  1
 LV_USE_TINY_TTF 1
-LV_TINY_TTF_FILE_SUPPORT 1
 LV_USE_VECTOR_GRAPHIC 1
 LV_USE_THORVG_INTERNAL 1
 LV_USE_LZ4_INTERNAL 1

examples/libs/tiny_ttf/lv_example_tiny_ttf_2.c

@@ -1,5 +1,8 @@
 #include "../../lv_examples.h"
-#if LV_USE_TINY_TTF && LV_TINY_TTF_FILE_SUPPORT && LV_BUILD_EXAMPLES
+
+#if LV_BUILD_EXAMPLES
+
+#if LV_USE_TINY_TTF && LV_TINY_TTF_FILE_SUPPORT
 
 /**
  * Load a font with Tiny_TTF from file
@@ -19,4 +22,18 @@ void lv_example_tiny_ttf_2(void)
     lv_label_set_text(label, "Hello world\nI'm a font\ncreated\nwith Tiny TTF");
     lv_obj_center(label);
 }
-#endif
+#else
+
+void lv_example_tiny_ttf_2(void)
+{
+    /*TODO
+     *fallback for online examples*/
+
+    lv_obj_t * label = lv_label_create(lv_screen_active());
+    lv_label_set_text(label, "TinyTTF can't load files in the browser");
+    lv_obj_center(label);
+}
+
+#endif /*LV_USE_TINY_TTF && LV_TINY_TTF_FILE_SUPPORT*/
+
+#endif /*LV_BUILD_EXAMPLES*/