core: Reword end of exception popup to motivate reporting.

The exception details and traceback are made available in the popup, but
it may be unclear why this would be necessary until later, so this
adjusts the text to motivate capturing this information when reporting a
bug or issue.

Author: neiljp

zulipterminal/core.py

@@ -714,10 +714,13 @@ def _raise_exception(self, *args: Any, **kwargs: Any) -> Literal[True]:
                     "* an issue at "
                     "https://github.com/zulip/zulip-terminal/issues"
                     "\n\n"
-                    f"Details of the exception can be found in {exception_logfile}"
-                    "\n\n"
-                    f"Press [{primary_display_key_for_command('COPY_TRACEBACK')}]"
-                    " to copy traceback to clipboard."
+                    "When reporting, it would be helpful to provide details of the "
+                    "exception beyond the quick summary above, which you can obtain:"
+                    "\n"
+                    f"* from the end of '{exception_logfile}'"
+                    "\n"
+                    "* by copying the details to the clipboard now "
+                    f"(press [{primary_display_key_for_command('COPY_TRACEBACK')}])"
                 )
                 full_traceback = "".join(traceback.format_exception(*exc))
                 self.show_exception_popup(message, traceback=full_traceback, width=80)