Concurrent stress mode adjustment in lite test variant

Lite-mode test runs were running tests with
--stress-concurrent-inlining, and this results in a flag contradiction.

Bug: v8:11907
Change-Id: I7c0c697af8b1f197f8c7735f62677943d91ebb91
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2983203
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75434}

tools/testrunner/local/variants.py

@@ -78,7 +78,8 @@ INCOMPATIBLE_FLAGS_PER_VARIANT = {
 # The conflicts might be directly contradictory flags or be caused by the
 # implications defined in flag-definitions.h.
 INCOMPATIBLE_FLAGS_PER_BUILD_VARIABLE = {
-  "lite_mode": ["--no-lazy-feedback-allocation", "--max-semi-space-size=*"]
+  "lite_mode": ["--no-lazy-feedback-allocation", "--max-semi-space-size=*",
+                "--stress-concurrent-inlining"]
                + INCOMPATIBLE_FLAGS_PER_VARIANT["jitless"],
   "predictable": ["--parallel-compile-tasks",
                   "--concurrent-recompilation",