Merge branch 'return-player-to-SI-from-multislave-f-scenes' into 'pregmod-master'

return player to SI from multislave f scenes

Closes #2128

See merge request !9101

src/npc/interaction/passage/fSlaveImpreg.tw

 :: FSlaveImpreg [nobr]
 
 <<set $impregnatrix = 0>>
+<<set $nextLink = "Slave Interact">>
+<<set $nextButton = "Back">>
 
 <p class="scene-intro">
 	<<= getSlave($AS).slaveName>> is fertile; now you must select a slave with both a penis and potent testicles.

src/npc/interaction/passage/fSlaveSlaveDick.tw

 :: FSlaveSlaveDick [nobr]
 
 <<set $slaverapistx = 0>>
+<<set $nextLink = "Slave Interact">>
+<<set $nextButton = "Back">>
 
 <p class="scene-intro">
 	Select a slave that will ride <<= getSlave($AS).slaveName>>.

src/npc/interaction/passage/fSlaveSlaveVag.tw

 :: FSlaveSlaveVag [nobr]
 
 <<set $slaverapistx = 0>>
+<<set $nextLink = "Slave Interact">>
+<<set $nextButton = "Back">>
 
 <p class="scene-intro">
 	Select a slave that will fuck <<= getSlave($AS).slaveName>>.