refactor: handle roleString from early on

Get a reference of `roleString` as early as possible, and be more
explicit about which argument we want to get from the arguments list.

At any given point (think, a future update to some library like JDA),
the list we are getting all of our arguments from could end up looking
from this:

    [1192015871509315, "Role String"]

to:

    [1192015871509315, "Role String", 24]

Therefore, making `args.getLast()` entirely obsolete. Being more
explicit about the argument number we would like to get reduces the
chances of something like this happening.

Suggested-by: Zabuzard <zabuza.dev@gmail.com>
Signed-off-by: Chris Sdogkos <work@chris-sdogkos.com>

Author: christolis

application/src/main/java/org/togetherjava/tjbot/features/roleapplication/RoleApplicationHandler.java

@@ -71,6 +71,8 @@ protected void sendApplicationResult(final ModalInteractionEvent event, List<Str
             return;
         }
 
+        String roleString = args.get(1);
+
         Optional<TextChannel> applicationChannel = getApplicationChannel(guild);
         if (applicationChannel.isEmpty()) {
             return;
@@ -83,7 +85,6 @@ protected void sendApplicationResult(final ModalInteractionEvent event, List<Str
                     .setFooter("Submitted at")
                     .setTimestamp(Instant.now());
 
-        String roleString = args.getLast();
         MessageEmbed.Field roleField = new MessageEmbed.Field("Role", roleString, false);
         embed.addField(roleField);