Review and adjust the default `DistributionStatisticConfig`

Nobody has claimed this yet.

Currently, Armeria uses the default `DistributionStatisticConfig` of:

```java
DistributionStatisticConfig
.builder()
.percentilesHistogram(false)
.sla()
.percentiles(new double[] { 0, 0.5, 0.75, 0.9, 0.95, 0.98, 0.99, 0.999, 1.0 })
.percentilePrecision(2)
.minimumExpectedValue(1L)
.maximumExpectedValue(Long.MAX_VALUE)
.expiry(Duration.ofMinutes(3))
.bufferLength(3)
.build();
```

When we define the above defaults, our intention was to rotate the buffer every minute, as explained in the comments:

```java
/**
* Export the percentile values only by default. We specify all properties so that we get consistent values
* even if Micrometer changes its defaults. Most notably, we changed {@code percentilePrecision},
* {@code expiry} and {@code bufferLength} due to the following reasons:
*

*
• The default {@code percentilePrecision} of 1 is way too inaccurate.

*
• Histogram buckets should be rotated every minute rather than every some-arbitrary-seconds
  * because that fits better to human's mental model of time. Micrometer's 2 minutes / 3 buffers
  * (i.e. rotate every 40 seconds) does not make much sense.

*

However, according to `TimeWindowMax.rotate()`: https://github.com/micrometer-metrics/micrometer/blob/v1.7.1/micrometer-core/src/main/java/io/micrometer/core/instrument/distribution/TimeWindowMax.java#L118-L145

it seems to me that the buffers are rotated every 3 minutes.

Action item: Double check if the buffers are rotated every minute with the current defaults. Change the defaults if we were mistaken.

Start with Armeria's default DistributionStatisticConfig definition and trace Micrometer's TimeWindowMax.rotate() implementation at the linked entry point. Verify whether the current expiry and bufferLength rotate buffers every minute, then adjust the defaults and explanatory comments if the assumption is wrong. Done means the rotation interval is correct and the relevant metrics behavior is covered by existing tests, if available.

Written by the indexing model from the issue text.