Revert "Fix a bug with cancelling "attach -w" after you have run a process previously (#65822)"

This reverts commit 7265f792.

The new test case is flaky on Linux AArch64 (https://lab.llvm.org/buildbot/#/builders/96)
and more flaky on Windows on Arm (https://lab.llvm.org/buildbot/#/builders/219/builds/5735).