Add font is support 0x96F6,but when label use is show incorrect rendering effect.

[MOC-Q]

Describe the bug
Add font is support 0x96F6,but when label use is show incorrect rendering effect. Other simplified Chinese characters will also display exceptions.

To Reproduce
Steps to reproduce the behavior:

1. add new font ,size 28, bpp 2, range 32-127,0x4E00-0x9FFF
2. add label set text is "Text三二一雷三二一" text font select new font.
3. main screen incorrect rendering effect.

Expected behavior
Under normal circumstances, it should be displayed the same as the input text.

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: [Windows]
• Version [10]

** LVGL version (if used)**

• 8.x

[jie-ss]

a similar issue is found on Dropdown, the options show correct but the drop list is wrong: