SseEventSource reconnect time unit isn't applied when set using the builder

When setting the reconnect time using the following code, the unit isn't applied, instead the value is applied always as milliseconds:

```
SseEventSource eventSource = SseEventSource.target(target)
.reconnectingEvery(1, TimeUnit.DAYS)
.build()
```

The cause is that the builder of [org.glassfish.jersey.media.sse.internal.EventProcessor](https://github.com/jersey/jersey/blob/12e5d8bdf22bcd2676a1032ed69473cf2bbc48c7/media/sse/src/main/java/org/glassfish/jersey/media/sse/internal/EventProcessor.java#L145) doesn't apply the time unit and just copies the value of `reconnectDelay` as is, ignoring the value of `reconnectUnit` in the builder.

### Proposed fix:

Simply multiply the value of `reconnectDelay` in the builder by `reconnectUnit` before setting the value of `reconnectDelay` in the `EventProcessor`:

```
private EventProcessor(Builder builder) {
...
this.reconnectDelay = TimeUnit.MILLISECONDS.convert(builder.reconnectDelay, builder.reconnectUnit != null ? builder.reconnectUnit : TimeUnit.MILLISECONDS);
...

Start in media/sse/src/main/java/org/glassfish/jersey/media/sse/internal/EventProcessor.java at the Builder constructor around the referenced line. Trace how reconnectDelay and reconnectUnit are passed from SseEventSource.reconnectingEvery, then verify that the completed EventProcessor represents the requested delay in milliseconds for non-millisecond units.

Written by the indexing model from the issue text.