Document know limitation about using `references` in conjunction with eager loading causing it to ignore custom select clauses.
Document know limitation about using `references` in conjunction with eager loading causing it to ignore custom select clauses.

[ci skip]

Fixes #24314

illacceptanything/illacceptanything,tjschuck/rails,kddeisz/rails,bogdanvlviv/rails,EmmaB/rails-1,kddeisz/rails,schuetzm/rails,richseviora/rails,lcreid/rails,palkan/rails,kirs/rails-1,arjes/rails,aditya-kapoor/rails,riseshia/railsguides.kr,mijoharas/rails,baerjam/rails,mechanicles/rails,utilum/rails,Stellenticket/rails,prathamesh-sonpatki/rails,esparta/rails,pvalena/rails,stefanmb/rails,sergey-alekseev/rails,arjes/rails,matrinox/rails,yasslab/railsguides.jp,illacceptanything/illacceptanything,odedniv/rails,EmmaB/rails-1,rafaelfranca/omg-rails,yahonda/rails,yahonda/rails,illacceptanything/illacceptanything,Spin42/rails,stefanmb/rails,yhirano55/rails,samphilipd/rails,rails/rails,arunagw/rails,richseviora/rails,xlymian/rails,matrinox/rails,lucasmazza/rails,samphilipd/rails,sealocal/rails,shioyama/rails,riseshia/railsguides.kr,kmcphillips/rails,untidy-hair/rails,pvalena/rails,deraru/rails,vipulnsward/rails,pvalena/rails,tgxworld/rails,illacceptanything/illacceptanything,MSP-Greg/rails,illacceptanything/illacceptanything,yahonda/rails,odedniv/rails,mathieujobin/reduced-rails-for-travis,Stellenticket/rails,kamipo/rails,arunagw/rails,prathamesh-sonpatki/rails,mtsmfm/railstest,rails/rails,xlymian/rails,kmcphillips/rails,notapatch/rails,notapatch/rails,Erol/rails,tgxworld/rails,rossta/rails,rbhitchcock/rails,yasslab/railsguides.jp,tjschuck/rails,repinel/rails,starknx/rails,kamipo/rails,tijwelch/rails,untidy-hair/rails,xlymian/rails,yawboakye/rails,sergey-alekseev/rails,ttanimichi/rails,MSP-Greg/rails,MichaelSp/rails,Stellenticket/rails,yalab/rails,mtsmfm/rails,koic/rails,jeremy/rails,mechanicles/rails,MSP-Greg/rails,tgxworld/rails,hanystudy/rails,MichaelSp/rails,kmayer/rails,fabianoleittes/rails,koic/rails,yalab/rails,kmcphillips/rails,ttanimichi/rails,georgeclaghorn/rails,yasslab/railsguides.jp,untidy-hair/rails,vipulnsward/rails,gcourtemanche/rails,baerjam/rails,travisofthenorth/rails,palkan/rails,joonyou/rails,Vasfed/rails,palkan/rails,marklocklear/rails,travisofthenorth/rails,mohitnatoo/rails,repinel/rails,schuetzm/rails,gavingmiller/rails,travisofthenorth/rails,joonyou/rails,iainbeeston/rails,BlakeWilliams/rails,Sen-Zhang/rails,utilum/rails,BlakeWilliams/rails,pschambacher/rails,Envek/rails,marklocklear/rails,kddeisz/rails,ngpestelos/rails,gauravtiwari/rails,palkan/rails,shioyama/rails,joonyou/rails,pvalena/rails,gauravtiwari/rails,Sen-Zhang/rails,bolek/rails,matrinox/rails,esparta/rails,repinel/rails,sealocal/rails,richseviora/rails,utilum/rails,tijwelch/rails,yasslab/railsguides.jp,kirs/rails-1,aditya-kapoor/rails,fabianoleittes/rails,ttanimichi/rails,yalab/rails,sealocal/rails,Sen-Zhang/rails,gfvcastro/rails,notapatch/rails,yahonda/rails,aditya-kapoor/rails,printercu/rails,BlakeWilliams/rails,printercu/rails,flanger001/rails,rails/rails,Vasfed/rails,voray/rails,bogdanvlviv/rails,arjes/rails,assain/rails,Edouard-chin/rails,bolek/rails,mathieujobin/reduced-rails-for-travis,mohitnatoo/rails,rbhitchcock/rails,mtsmfm/rails,yalab/rails,iainbeeston/rails,Envek/rails,elfassy/rails,Spin42/rails,ledestin/rails,illacceptanything/illacceptanything,pschambacher/rails,jeremy/rails,brchristian/rails,travisofthenorth/rails,eileencodes/rails,gauravtiwari/rails,Erol/rails,kaspth/rails,coreyward/rails,kachick/rails,gfvcastro/rails,schuetzm/rails,alecspopa/rails,arunagw/rails,tijwelch/rails,mijoharas/rails,flanger001/rails,bogdanvlviv/rails,lucasmazza/rails,mtsmfm/railstest,untidy-hair/rails,yhirano55/rails,bradleypriest/rails,mohitnatoo/rails,rafaelfranca/omg-rails,tjschuck/rails,shioyama/rails,illacceptanything/illacceptanything,iainbeeston/rails,illacceptanything/illacceptanything,ledestin/rails,maicher/rails,prathamesh-sonpatki/rails,rossta/rails,eileencodes/rails,flanger001/rails,eileencodes/rails,betesh/rails,eileencodes/rails,georgeclaghorn/rails,maicher/rails,baerjam/rails,yhirano55/rails,illacceptanything/illacceptanything,bradleypriest/rails,bolek/rails,kaspth/rails,assain/rails,felipecvo/rails,starknx/rails,illacceptanything/illacceptanything,betesh/rails,esparta/rails,illacceptanything/illacceptanything,yawboakye/rails,MichaelSp/rails,betesh/rails,prathamesh-sonpatki/rails,rafaelfranca/omg-rails,felipecvo/rails,gfvcastro/rails,illacceptanything/illacceptanything,baerjam/rails,kenta-s/rails,kachick/rails,samphilipd/rails,riseshia/railsguides.kr,repinel/rails,Erol/rails,kachick/rails,assain/rails,mtsmfm/railstest,voray/rails,deraru/rails,gfvcastro/rails,bradleypriest/rails,felipecvo/rails,maicher/rails,shioyama/rails,Vasfed/rails,rossta/rails,esparta/rails,fabianoleittes/rails,ngpestelos/rails,gavingmiller/rails,flanger001/rails,iainbeeston/rails,kaspth/rails,lcreid/rails,Edouard-chin/rails,ledestin/rails,bogdanvlviv/rails,assain/rails,voray/rails,jeremy/rails,Spin42/rails,stefanmb/rails,Edouard-chin/rails,vipulnsward/rails,rails/rails,kmayer/rails,gcourtemanche/rails,kenta-s/rails,Erol/rails,kmcphillips/rails,brchristian/rails,Vasfed/rails,BlakeWilliams/rails,kirs/rails-1,hanystudy/rails,yhirano55/rails,mechanicles/ra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