Trigger the logging when prompting for wipe.

This allows recording the reason string that prompts user for a data
wipe, even if user selects 'Try again'.

Test: Inject an error into framework to trigger RescueParty. Select
      'Try again' and check the recovery log post-boot.
Change-Id: I0d7d5afcf38cae5019e2ce0a46d3cd1ac3e83a03
diff --git a/recovery.cpp b/recovery.cpp
index 6248cf7..7cc344b 100644
--- a/recovery.cpp
+++ b/recovery.cpp
@@ -1196,6 +1196,9 @@
       status = INSTALL_ERROR;
     }
   } else if (should_prompt_and_wipe_data) {
+    // Trigger the logging to capture the cause, even if user chooses to not wipe data.
+    modified_flash = true;
+
     ui->ShowText(true);
     ui->SetBackground(RecoveryUI::ERROR);
     status = prompt_and_wipe_data(device);