test: limit the number of events for example tests

If we process too many events in the example tests, the test log output
file will be huge, since the examples are quite verbose by design. Users
who want to run examples with more events may simply run the example
executables (rather than `meson test`).

examples/meson.build

@@ -35,7 +35,7 @@ foreach example, info : example_sources
       example_exe,
       args: info.get(
         'test_args',
-        [ get_option('test_data_file'), get_option('test_num_events') ]
+        [ get_option('test_data_file'), '100' ] # don't run too many events, or meson test log will be huge
       ),
       env: project_test_env,
     )