fix(keyboard): in the example set Arabic font if enabled

[kisvegabor]

Description of the feature or fix

The Arabic character are not displayed in the example now:
https://docs.lvgl.io/master/widgets/keyboard.html#keyboard-with-text-area

Notes

• Update the Documentation if needed.
• Add Examples if relevant.
• Add Tests if applicable.
• If you added new options to lv_conf_template.h run lv_conf_internal_gen.py and update Kconfig.
• Run scripts/code-format.py (astyle needs to be installed) and follow the Code Conventions
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[IAMMX]

lvgl/examples/widgets/textarea/lv_example_textarea_2.c

Lines 8 to 42 in 0353bcc

	void lv_example_textarea_2(void)
	{
	/*Create the password box*/
	lv_obj_t * pwd_ta = lv_textarea_create(lv_screen_active());
	lv_textarea_set_text(pwd_ta, "");
	lv_textarea_set_password_mode(pwd_ta, true);
	lv_textarea_set_one_line(pwd_ta, true);
	lv_obj_set_width(pwd_ta, lv_pct(40));
	lv_obj_set_pos(pwd_ta, 5, 20);
	lv_obj_add_event_cb(pwd_ta, ta_event_cb, LV_EVENT_ALL, NULL);
	/*Create a label and position it above the text box*/
	lv_obj_t * pwd_label = lv_label_create(lv_screen_active());
	lv_label_set_text(pwd_label, "Password:");
	lv_obj_align_to(pwd_label, pwd_ta, LV_ALIGN_OUT_TOP_LEFT, 0, 0);
	/*Create the one-line mode text area*/
	lv_obj_t * text_ta = lv_textarea_create(lv_screen_active());
	lv_textarea_set_one_line(text_ta, true);
	lv_textarea_set_password_mode(text_ta, false);
	lv_obj_set_width(text_ta, lv_pct(40));
	lv_obj_add_event_cb(text_ta, ta_event_cb, LV_EVENT_ALL, NULL);
	lv_obj_align(text_ta, LV_ALIGN_TOP_RIGHT, -5, 20);
	/*Create a label and position it above the text box*/
	lv_obj_t * oneline_label = lv_label_create(lv_screen_active());
	lv_label_set_text(oneline_label, "Text:");
	lv_obj_align_to(oneline_label, text_ta, LV_ALIGN_OUT_TOP_LEFT, 0, 0);
	/*Create a keyboard*/
	kb = lv_keyboard_create(lv_screen_active());
	lv_obj_set_size(kb, LV_HOR_RES, LV_VER_RES / 2);
	lv_keyboard_set_textarea(kb, pwd_ta); /*Focus it on one of the text areas to start*/
	}

https://docs.lvgl.io/master/widgets/textarea.html#text-area-with-password-field
This example also needs fixing.

[kisvegabor]

Thank you, updated.