[test] Encode Kharoshti text

Ouch!

test/shaping/texts/in-tree/shaper-use/script-kharoshti/misc.txt

-10a24 10a2a 10a0c 10a2a 10a3f 10a17 10a38 10a05 10a0c 10a0f
-10a00 10a01
-10a10 10a01
-10a20 10a01
-10a00 10a02
-10a31 10a02
-10a28 10a02
-10a00 10a03
-10a28 10a03
-10a00 10a05
-10a10 10a05
-10a20 10a05
-10a21 10a05
-10a00 10a06
-10a24 10a06
-10a28 10a0c
-10a2f 10a0d
-10a00 10a0e
-10a10 10a0f
-10a17 10a38
-10a12 10a39
-10a28 10a3a
-10a22 10a01 10a10 10a3f
-10a10 10a3f 10a2e
-10a28 10a3f 10a2a
-10a2c 10a3f 10a31
-10a2f 10a3f 10a1f
-10a2f 10a3f 10a29
-10a2a 10a3f 10a1f
-10a1f 10a3f 10a2a
-10a2b 10a3f 10a24
-10a24 10a3f 10a2b
-10a10 10a3f 10a2b
-10a1f 10a3f 10a2c
-10a10 10a3f 10a1f
-10a11 10a3f 10a10 10a3f 10a2e
+𐨤𐨪𐨌𐨪𐨿𐨗𐨸𐨅𐨌𐨏
+𐨀𐨁
+𐨐𐨁
+𐨠𐨁
+𐨀𐨂
+𐨱𐨂
+𐨨𐨂
+𐨀𐨃
+𐨨𐨃
+𐨀𐨅
+𐨐𐨅
+𐨠𐨅
+𐨡𐨅
+𐨀𐨆
+𐨤𐨆
+𐨨𐨌
+𐨯𐨍
+𐨀𐨎
+𐨐𐨏
+𐨗𐨸
+𐨒𐨹
+𐨨𐨺
+𐨢𐨁𐨐𐨿
+𐨐𐨿𐨮
+𐨨𐨿𐨪
+𐨬𐨿𐨱
+𐨯𐨿𐨟
+𐨯𐨿𐨩
+𐨪𐨿𐨟
+𐨟𐨿𐨪
+𐨫𐨿𐨤
+𐨤𐨿𐨫
+𐨐𐨿𐨫
+𐨟𐨿𐨬
+𐨐𐨿𐨟
+𐨑𐨿𐨐𐨿𐨮