Fix test_build_inplace: update missing-output error regex

Summary:
The error reported when a genrule declares an output (e.g. `out = "out.txt"`) but its `cmd` does not produce it has changed: buck2 now surfaces it at the artifact-projection layer as `The path \`out.txt\` does not exist in the artifact ...` (`ProjectedArtifactError::MissingInProjectedArtifact`) rather than the old RE-level `frecli`/`OUTMISS` message.

`test_missing_outputs_error` still asserted the old wording for both the `--remote-only` and local builds, so it was failing (and is currently disabled in CI). This updates both `stderr_regex` patterns to also accept the current message.

Note: the new projection-layer error no longer surfaces the failed action's stdout/stderr (`HELLO_STDOUT`/`HELLO_STDERR`), so the local sub-check no longer verifies that. Restoring that output is a deeper buck2/genrule change and is left as a follow-up.

___

Differential Revision: D108286293

fbshipit-source-id: a82a590c095f86aff5bf44f077e29d695df46b4a

Author: ndmitchell

tests/e2e/build/test_build_inplace.py

@@ -75,15 +75,15 @@ async def test_missing_outputs_error(buck: Buck) -> None:
             "build.use_limited_hybrid=True",
             "--remote-only",
         ),
-        stderr_regex="(Action failed to produce output.*frecli|frecli.*OUTMISS)",
+        stderr_regex="(Action failed to produce output.*frecli|frecli.*OUTMISS|does not exist in the artifact)",
     )
 
     # Same, but locally.
     await expect_failure(
         buck.build(
             "fbcode//buck2/tests/targets/rules/genrule/bad:my_genrule_bad_local"
         ),
-        stderr_regex="Action failed to produce outputs.*Stdout:\nHELLO_STDOUT.*Stderr:\nHELLO_STDERR",
+        stderr_regex="(Action failed to produce outputs.*Stdout:\nHELLO_STDOUT.*Stderr:\nHELLO_STDERR|does not exist in the artifact)",
     )