Add missing deprecation rerouting for add_to_queue in TPUSpawnPlugin

[awaelchli]

What does this PR do?

Found while working on #10034, #10059.
This was missed in #9118

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Did you have fun?

I made sure I had fun coding 🙃

Part of #1 (it's a lie, this is just here to avoid noisy GitHub bot)

cc @Borda @carmocca @JackCaoG @Liyang90 @gkroiz @tchaton @justusschock @awaelchli @kaushikb11

[tchaton]

LGTM !

[codecov]

Codecov Report

Merging #10854 (c349cf0) into master (f3b0a06) will increase coverage by 2%.
The diff coverage is 0%.

@@           Coverage Diff            @@
##           master   #10854    +/-   ##
========================================
+ Coverage      88%      90%    +2%     
========================================
  Files         177      177            
  Lines       16553    16555     +2     
========================================
+ Hits        14570    14948   +378     
+ Misses       1983     1607   -376