Readds martyr and hijack objectives for spy/traitor (#3366)

## About The Pull Request
title
## Why It's Good For The Game
I can't actually find where we originally removed these, before they
were just re-removed at least, and the reasons I was given for their
latest removal were a bunch of 'what if' scenarios that are incredibly
easy to administrate (like, one of the very few cut and dry things
admins will look at across the board and go "no this is bad") those
examples being "what if the traitor delams the SM to cause an early
shuttle call so they can do the hijack sooner" and pretty much the same
thing, but instead of hijacking, doing it to kill themself for "die a
glorious death"
Both of these scenarios I have (in my 1.5 years adminning here) never
seen happen and I whole heartedly believe that any admin on the team
would be able to pretty quickly identify what is currently/about to
happen on the off chance they were to start occuring and put a stop to
it.
As a design philosophy, I don't want us removing things off the what-if
potential that they could go wrong (if we did that we'd gut
xenobio/botany/chemistry)
## Proof Of Testing
it works
<details>
<summary>Screenshots/Videos</summary>

</details>

## Changelog
🆑
add: hijack/martyr objectives to tot/spy
/🆑

Co-authored-by: The Sharkening <95130227+StrangeWeirdKitten@users.noreply.github.com>
Co-authored-by: Roxy <75404941+TealSeer@users.noreply.github.com>

code/modules/antagonists/spy/spy.dm

@@ -160,7 +160,6 @@
 				cage_the_jailbird.no_failure = TRUE
 				objectives += cage_the_jailbird
 
-	/* // BUBBER EDIT BEGIN
 	if(prob(10))
 		var/datum/objective/martyr/leave_no_trace = new()
 		leave_no_trace.owner = owner
@@ -170,7 +169,6 @@
 		var/datum/objective/hijack/steal_the_shuttle = new()
 		steal_the_shuttle.owner = owner
 		objectives += steal_the_shuttle
-	*/ // BUBBER EDIT END
 
 	else if(prob(10)) //10% chance on 87.3% chance
 		var/datum/objective/exile/hit_the_bricks = new()

code/modules/antagonists/traitor/datum_traitor.dm

@@ -127,11 +127,9 @@
 /datum/antagonist/traitor/proc/forge_traitor_objectives()
 	var/objective_count = 0
 
-	/* // BUBBER EDIT BEGIN
 	if((GLOB.joined_player_list.len >= HIJACK_MIN_PLAYERS) && prob(HIJACK_PROB))
 		is_hijacker = TRUE
 		objective_count++
-	*/ // BUBBER EDIT END
 
 	var/objective_limit = CONFIG_GET(number/traitor_objectives_amount)
 
@@ -146,13 +144,11 @@
  * Forges the endgame objective and adds it to this datum's objective list.
  */
 /datum/antagonist/traitor/proc/forge_ending_objective()
-	/* // BUBBER EDIT BEGIN
 	if(is_hijacker)
 		ending_objective = new /datum/objective/hijack
 		ending_objective.owner = owner
 		return
 
-
 	var/martyr_compatibility = TRUE
 
 	for(var/datum/objective/traitor_objective in objectives)
@@ -165,7 +161,6 @@
 		ending_objective.owner = owner
 		objectives += ending_objective
 		return
-	*/ // BUBBER EDIT END
 
 	ending_objective = new /datum/objective/escape
 	ending_objective.owner = owner