fix(toolchains): correctly register musl/freethreaded toolchains for workspace#3314

aignas merged 2 commits intobazel-contrib:mainbazel-contrib/rules_python:mainfrom

rickeylev:fix.musl.ft.toolchain.registration.workspacerickeylev/rules_python:fix.musl.ft.toolchain.registration.workspaceCopy head branch name to clipboard