fix(imgfont):for img cache

[cnjhb]

The cache for variable images is recognized based on a pointer to the variable, but with imgfont it is always necessary to refer the contents of the variable image to the path field of imgfont_dsc_t,
which means that even though the image has changed, the cache has not. This results in later letters displaying the image of the first letter.

Notes

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• Add Examples if relevant.
• Add Tests if applicable.
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[liamHowatt]

The v8.4 CI has been fixed. Please rebase so the fixed CI can run.

[cnjhb]

The v8.4 CI has been fixed. Please rebase so the fixed CI can run.

thank you

[liamHowatt]

Wow, thank you.

Confirmed with:

cp docs/favicon.png examples/assets/emoji/F601.png

diff --git a/examples/others/imgfont/lv_example_imgfont_1.c b/examples/others/imgfont/lv_example_imgfont_1.c
index e98393284..bcff1f673 100644
--- a/examples/others/imgfont/lv_example_imgfont_1.c
+++ b/examples/others/imgfont/lv_example_imgfont_1.c
@@ -37,7 +37,7 @@ void lv_example_imgfont_1(void)
     imgfont->fallback = LV_FONT_DEFAULT;
 
     lv_obj_t * label1 = lv_label_create(lv_scr_act());
-    lv_label_set_text(label1, "12\uF600\uF617AB");
+    lv_label_set_text(label1, "12\uF600\uF617\uF601AB");
     lv_obj_set_style_text_font(label1, imgfont, LV_PART_MAIN);
     lv_obj_center(label1);
 }

Before:

After:

[AndreCostaaa]

Thanks 🚀