Rollup merge of #136157 - onur-ozkan:override-release-profile, r=Kobzol

override build profile for bootstrap tests

Using the release profile for bootstrap self tests puts too much load on the CPU and makes it quite hot on `x test bootstrap` invocation for no good reason. It also makes the compilation take longer than usual (see rust-lang/rust#136048 (comment)). This change turns off the release flag for bootstrap self tests.