[test] Enable spread-large-array/spread-large-string on lite mode

These tests were timing out because we used to miss to runtime when
storing keyed properties in lite mode. Now, the store ICs are updated to
use fast path when possible even with lite mode. So, these should no longer
timeout

Bug: v8:8293
Change-Id: I63481768cc7d12c25c7f1a20ed1fa097979f2c50
Reviewed-on: https://chromium-review.googlesource.com/c/1475754Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59652}

test/mjsunit/mjsunit.status

@@ -352,12 +352,6 @@
   'regress/regress-trap-allocation-memento': [SKIP],
   'regress/regress-4121': [SKIP],
 
-  # Slow tests without feedback vectors
-  # TODO(mythria): Investigate why they are slow and either fix if
-  # possible are update the reason why they are slow.
-  'spread-large-string': [SKIP],
-  'spread-large-array': [SKIP],
-
   # TODO(v8:7777): Re-enable once wasm is supported in jitless mode.
   'regress/regress-5888': [SKIP],
   'regress/regress-5911': [SKIP],