Flip --experimental_strict_action_env on by default.

Also rename it to --incompatible_strict_action_env. See #6648 and #2574. For a while, many actions did not respect the --action_env command line option, but those have been fixed now. So, I think it's time to flip on this flag for greater hermeticity by default.

Closes #6263.

RELNOTES: The --experimental_strict_action_env option has been renamed to --incompatible_strict_action_env and is now on by default. This means Bazel will no longer use the client's PATH and LD_LIBRARY_PATH environmental variables in the default action environment. If the old behavior is desired, pass --action_env=PATH and --action_env=LD_LIBRARY_PATH. --noincompatible_strict_action_env will also temporarily restore the old behavior. However, as --action_env is a more general and explicit way to pass client environmental variables into actions, --noincompatible_strict_action_env will eventually be deprecated and removed. See #6648 for more details.
PiperOrigin-RevId: 222053105
diff --git a/compile.sh b/compile.sh
index ed506d2..c2460fa 100755
--- a/compile.sh
+++ b/compile.sh
@@ -93,6 +93,7 @@
 # We set host and target platform directly since the defaults in @bazel_tools
 # have not yet been generated.
 bazel_build "src:bazel_nojdk${EXE_EXT}" \
+  --action_env=PATH \
   --host_platform=@bazel_tools//platforms:host_platform \
   --platforms=@bazel_tools//platforms:target_platform \
   || fail "Could not build Bazel"