[7.2.0] Windows: Inconsistent escaping for run --script_path

[bazel-io]

Forked from #21940

[bazel-io]

Cherry-pick was attempted but there were merge conflicts in the following file(s). Please resolve manually.

src/main/java/com/google/devtools/build/lib/runtime/commands/RunCommandLine.java
src/test/java/com/google/devtools/build/lib/runtime/commands/RunCommandLineTest.java
src/test/shell/integration/run_test.sh

cc: @bazelbuild/triage

[iancha1992]

Cherry-pick was attempted but there were merge conflicts in the following file(s). Please resolve manually.

src/main/java/com/google/devtools/build/lib/runtime/commands/RunCommandLine.java src/test/java/com/google/devtools/build/lib/runtime/commands/RunCommandLineTest.java src/test/shell/integration/run_test.sh

cc: @bazelbuild/triage

cc: @fmeum

[fmeum]

@iancha1992 Let's close this one, it does seem to need prerequisites I'm not familiar with.

[iancha1992]

Sure.

cc: @meisterT @tjgq