[ios-clr] Preserve PDBs for CoreCLR and fix StackTrace tests on Apple mobile#127060

kotlarmilos wants to merge 5 commits intodotnet:maindotnet/runtime:mainfrom

kotlarmilos:ios-clr/pr-i-stacktrace-pdbkotlarmilos/runtime:ios-clr/pr-i-stacktrace-pdbCopy head branch name to clipboard