julia

2c2ea3aa - Document environment variable JULIA_PKG_PRESERVE_TIERED_INSTALLED (#52362)

Document environment variable JULIA_PKG_PRESERVE_TIERED_INSTALLED (#52362) This is based on ```julia julia> using Pkg help?> Pkg.add ... │ Note │ │ To change the default strategy to PRESERVE_TIERED_INSTALLED set the env var │ JULIA_PKG_PRESERVE_TIERED_INSTALLED to true. ... ``` I suggest to backport this so that it becomes available in the release docs of Julia v1.9 and newer.