screen_ui: Word-wrap menu headers.

This CL adds ScreenRecoveryUI::DrawWrappedTextLines() to better handle
long menu header texts. It does a word wrap at spaces, if available.
This avoids fixed-length menu headers being truncated on small screens.

Bug: 64293520
Test: On bullhead, boot into recovery with --prompt_and_wipe_data, and
      check the prompt texts.
Change-Id: Ia22746583516dd230567a267584aca558429395e
(cherry picked from commit 2bbc6d642d)

recovery.cpp

@@ -758,12 +758,13 @@ static bool wipe_data(Device* device) {
 }
 
 static bool prompt_and_wipe_data(Device* device) {
+  // Use a single string and let ScreenRecoveryUI handles the wrapping.
   const char* const headers[] = {
-    "Can't load Android system. Your data may be corrupt.",
-    "If you continue to get this message, you may need to",
-    "perform a factory data reset and erase all user data",
+    "Can't load Android system. Your data may be corrupt. "
+    "If you continue to get this message, you may need to "
+    "perform a factory data reset and erase all user data "
     "stored on this device.",
-    NULL
+    nullptr
   };
   const char* const items[] = {
     "Try again",