Baseline: cec8ee49f731e48b5bb336a27a7f2f1be770da48

Cherry picks:

   + 2a60c3357abd1e881088e88747ac7c7baa6f2e79:
     Roll forward of commit 909985a3b9a1f71106e7cba31eb862078e5bdebe
     with … (https://github.com/bazelbuild/bazel/pull/30754)

Important changes:

  - Fix `Could not chdir` in `tw.exe` for long runfiles paths on
    Windows.

This release contains contributions from many people at Google, as well as Anton Karpov, Armando Montanez, Chi Wang, Fabian Meumertzheim, Rgis Desgroppes, Son Luong Ngoc.