test: Widen the sync lock deadline budget

One 0.25 s deadline covered two steps: the actor start and the lock
wait under test. When a slow CI runner took more than 0.25 s to start
the actor, the call timed out before the actor ran, and the test
waited 2 s for it at line 422. This failed the Rails 7.1 compatibility
job in run 36877758705.

Give the call 1 s, and set the outer limits to 3 s and 2 s. A 0.3 s
stall before the actor claim reproduced the CI error with the old
budget; with the new budget, 0.3 s and 0.6 s stalls pass. The limits
stay below the 5 s SQLite busy timeout: when the deadline never
expires, the test fails at line 443 on Rails 7.1 and 8.1.

Author: cardmagic

test/integration/synchronous_invocation_test.rb

@@ -415,7 +415,7 @@ def wait(timeout:)
     result = Queue.new
     invocation = Thread.new do
       result << capture_exception do
-        SolidObjects::SynchronousInvocation.new.call(message_reference, timeout: 0.25)
+        SolidObjects::SynchronousInvocation.new.call(message_reference, timeout: 1)
       end
     end
 
@@ -440,11 +440,11 @@ def wait(timeout:)
 
     started_at = monotonic_now
     DeadlineActor.continue << true
-    error = Timeout.timeout(2) { result.pop }
+    error = Timeout.timeout(3) { result.pop }
     elapsed = monotonic_now - started_at
 
     assert_instance_of SolidObjects::SyncTimeout, error
-    assert_operator elapsed, :<, 1.5
+    assert_operator elapsed, :<, 2
     assert_equal message_reference.id, error.message_id
   ensure
     DeadlineActor.continue << true if invocation&.alive?