Flush the batches every 8ms instead of 50 ms (#2220)

Gives us a much nicer realtime feel for the camera example.

Our example .rrd files don't grow by more than a few percent at worst,
so I think this is well worth it to make rerun feel snappy.

### Checklist
* [x] I have read and agree to [Contributor
Guide](https://github.com/rerun-io/rerun/blob/main/CONTRIBUTING.md) and
the [Code of
Conduct](https://github.com/rerun-io/rerun/blob/main/CODE_OF_CONDUCT.md)

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PR Build Summary: https://build.rerun.io/pr/2220

crates/re_log_types/src/data_table_batcher.rs

@@ -73,8 +73,8 @@ impl Default for DataTableBatcherConfig {
 impl DataTableBatcherConfig {
     /// Default configuration, applicable to most use cases.
     pub const DEFAULT: Self = Self {
-        flush_tick: Duration::from_millis(50),
-        flush_num_bytes: 1024 * 1024, // 1 MiB
+        flush_tick: Duration::from_millis(8), // We want it fast enough for 60 Hz for real time camera feel
+        flush_num_bytes: 1024 * 1024,         // 1 MiB
         flush_num_rows: u64::MAX,
         max_commands_in_flight: None,
         max_tables_in_flight: None,