Reduce fsync interval to 10ms (#4466)

# Description of Changes

Reduce fsync interval from 50ms -> 10ms

# API and ABI breaking changes

None

# Expected complexity level and risk

1

Should be fine based on p99 latencies

# Testing

N/A

Author: joshua-spacetime

crates/durability/src/imp/local.rs

@@ -34,7 +34,7 @@ pub use spacetimedb_commitlog::repo::{OnNewSegmentFn, SizeOnDisk};
 pub struct Options {
     /// Periodically flush and sync the log this often.
     ///
-    /// Default: 50ms
+    /// Default: 10ms
     pub sync_interval: Duration,
     /// [`Commitlog`] configuration.
     pub commitlog: spacetimedb_commitlog::Options,
@@ -43,7 +43,7 @@ pub struct Options {
 impl Default for Options {
     fn default() -> Self {
         Self {
-            sync_interval: Duration::from_millis(50),
+            sync_interval: Duration::from_millis(10),
             commitlog: Default::default(),
         }
     }