fix(high contrast text): Uses a new string resource for the settings action.

The old string has all non-English translations without format
placeholders, which will fail to build the string on those
languages until translations are added.

Bug: 384791485
Flag: com.android.graphics.hwui.flags.high_contrast_text_small_text_rect
Change-Id: I4565610908d463c05576d5c5d0b083f76802cc9e