Rollup merge of #82177 - rylev:no-delete-bootstrap-windows, r=Mark-Simulacrum
Rollup merge of #82177 - rylev:no-delete-bootstrap-windows, r=Mark-Simulacrum

Do not delete bootstrap.exe on Windows during clean

Windows does not allow deleting currently running executables.

This an addition to ```@jyn514's``` change in https://github.com/rust-lang/rust/pull/80574.

graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,aidancully/rust