[turbofan] Temporarily disable OSR for performance data

Just set the flag --use-osr to false by default.
If it's set to true on the command line, then it'll be on.

I'd like to get some performance metrics on various tests spread
throughout our performance bot infrastructure.

Change-Id: I1ebc33264505af080901e531dca625452880f81b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1558089Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Michael Stanton <mvstanton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60693}

src/flag-definitions.h

@@ -521,7 +521,7 @@ DEFINE_BOOL(inline_accessors, true, "inline JavaScript accessors")
 DEFINE_BOOL(inline_into_try, true, "inline into try blocks")
 DEFINE_BOOL(turbo_inline_array_builtins, true,
             "inline array builtins in TurboFan code")
-DEFINE_BOOL(use_osr, true, "use on-stack replacement")
+DEFINE_BOOL(use_osr, false, "use on-stack replacement")
 DEFINE_BOOL(trace_osr, false, "trace on-stack replacement")
 DEFINE_BOOL(analyze_environment_liveness, true,
             "analyze liveness of environment slots and zap dead values")