Add a commend about deprecation of ActiveSupport::OrderedHash
Add a commend about deprecation of ActiveSupport::OrderedHash

It is in the code to provides backward compatibility for people that
have this class serialized as YAML in some storage.

Closes #22681

vassilevsky/rails,prathamesh-sonpatki/rails,aditya-kapoor/rails,Stellenticket/rails,koic/rails,sealocal/rails,brchristian/rails,vassilevsky/rails,utilum/rails,eileencodes/rails,mtsmfm/rails,deraru/rails,Envek/rails,marklocklear/rails,brchristian/rails,utilum/rails,Edouard-chin/rails,eileencodes/rails,illacceptanything/illacceptanything,mechanicles/rails,rafaelfranca/omg-rails,vipulnsward/rails,yawboakye/rails,stefanmb/rails,kaspth/rails,esparta/rails,kmayer/rails,illacceptanything/illacceptanything,gcourtemanche/rails,lcreid/rails,odedniv/rails,maicher/rails,ngpestelos/rails,shioyama/rails,illacceptanything/illacceptanything,MSP-Greg/rails,riseshia/railsguides.kr,ttanimichi/rails,gcourtemanche/rails,kachick/rails,mechanicles/rails,kamipo/rails,bolek/rails,Erol/rails,repinel/rails,assain/rails,kirs/rails-1,betesh/rails,printercu/rails,vassilevsky/rails,voray/rails,coreyward/rails,rbhitchcock/rails,schuetzm/rails,elfassy/rails,notapatch/rails,riseshia/railsguides.kr,lcreid/rails,yasslab/railsguides.jp,aditya-kapoor/rails,kenta-s/rails,rbhitchcock/rails,ledestin/rails,tgxworld/rails,repinel/rails,fabianoleittes/rails,bolek/rails,esparta/rails,yawboakye/rails,yasslab/railsguides.jp,Envek/rails,Sen-Zhang/rails,flanger001/rails,vipulnsward/rails,deraru/rails,joonyou/rails,stefanmb/rails,kmayer/rails,georgeclaghorn/rails,lucasmazza/rails,lcreid/rails,maicher/rails,kddeisz/rails,MSP-Greg/rails,xlymian/rails,mohitnatoo/rails,gfvcastro/rails,tijwelch/rails,iainbeeston/rails,felipecvo/rails,samphilipd/rails,printercu/rails,illacceptanything/illacceptanything,rails/rails,georgeclaghorn/rails,MichaelSp/rails,rails/rails,EmmaB/rails-1,voray/rails,mtsmfm/railstest,amoody2108/TechForJustice,untidy-hair/rails,kmcphillips/rails,pvalena/rails,MichaelSp/rails,schuetzm/rails,flanger001/rails,arjes/rails,bogdanvlviv/rails,illacceptanything/illacceptanything,yahonda/rails,starknx/rails,xlymian/rails,xlymian/rails,pschambacher/rails,alecspopa/rails,tjschuck/rails,rossta/rails,hanystudy/rails,shioyama/rails,pvalena/rails,tgxworld/rails,tijwelch/rails,illacceptanything/illacceptanything,starknx/rails,mijoharas/rails,yahonda/rails,illacceptanything/illacceptanything,kachick/rails,jeremy/rails,Vasfed/rails,notapatch/rails,palkan/rails,ngpestelos/rails,prathamesh-sonpatki/rails,sergey-alekseev/rails,gfvcastro/rails,vipulnsward/rails,amoody2108/TechForJustice,yalab/rails,tgxworld/rails,pschambacher/rails,BlakeWilliams/rails,untidy-hair/rails,felipecvo/rails,sealocal/rails,rafaelfranca/omg-rails,ttanimichi/rails,jeremy/rails,palkan/rails,georgeclaghorn/rails,riseshia/railsguides.kr,EmmaB/rails-1,travisofthenorth/rails,Vasfed/rails,baerjam/rails,richseviora/rails,gfvcastro/rails,yawboakye/rails,riseshia/railsguides.kr,lucasmazza/rails,sergey-alekseev/rails,coreyward/rails,tjschuck/rails,Edouard-chin/rails,gcourtemanche/rails,printercu/rails,Envek/rails,bradleypriest/rails,kamipo/rails,gfvcastro/rails,rossta/rails,yasslab/railsguides.jp,ledestin/rails,coreyward/rails,koic/rails,jeremy/rails,shioyama/rails,utilum/rails,mechanicles/rails,yahonda/rails,iainbeeston/rails,arunagw/rails,arjes/rails,assain/rails,kddeisz/rails,mtsmfm/rails,kmcphillips/rails,alecspopa/rails,shioyama/rails,joonyou/rails,mtsmfm/railstest,mechanicles/rails,aditya-kapoor/rails,MSP-Greg/rails,richseviora/rails,aditya-kapoor/rails,baerjam/rails,illacceptanything/illacceptanything,marklocklear/rails,palkan/rails,yhirano55/rails,rails/rails,rafaelfranca/omg-rails,esparta/rails,Envek/rails,ttanimichi/rails,sergey-alekseev/rails,samphilipd/rails,kddeisz/rails,matrinox/rails,deraru/rails,odedniv/rails,elfassy/rails,bogdanvlviv/rails,illacceptanything/illacceptanything,kddeisz/rails,schuetzm/rails,tijwelch/rails,gavingmiller/rails,ledestin/rails,MichaelSp/rails,kmcphillips/rails,kenta-s/rails,repinel/rails,hanystudy/rails,schuetzm/rails,mathieujobin/reduced-rails-for-travis,EmmaB/rails-1,bolek/rails,lucasmazza/rails,illacceptanything/illacceptanything,elfassy/rails,prathamesh-sonpatki/rails,maicher/rails,baerjam/rails,hanystudy/rails,tgxworld/rails,betesh/rails,mijoharas/rails,travisofthenorth/rails,kaspth/rails,fabianoleittes/rails,yalab/rails,amoody2108/TechForJustice,BlakeWilliams/rails,joonyou/rails,Vasfed/rails,pvalena/rails,MSP-Greg/rails,travisofthenorth/rails,illacceptanything/illacceptanything,bradleypriest/rails,arunagw/rails,odedniv/rails,Sen-Zhang/rails,kamipo/rails,Stellenticket/rails,flanger001/rails,kirs/rails-1,matrinox/rails,printercu/rails,kenta-s/rails,illacceptanything/illacceptanything,arjes/rails,betesh/rails,Sen-Zhang/rails,mtsmfm/rails,arunagw/rails,kmcphillips/rails,notapatch/rails,richseviora/rails,illacceptanything/illacceptanything,Spin42/rails,brchristian/rails,Edouard-chin/rails,tjschuck/rails,eileencodes/rails,yasslab/railsguides.jp,starknx/rails,betesh/rails,mohitnatoo/rails,assain/rails,gauravtiwari/rails,matrinox/rails,arunagw/rails,untidy-hair/rails,pvalena/rails,alecspopa/rails,kachick/rails,bradleypriest/rails,vipulnsward/rails,gavingmiller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