R datetime / timestamp column summary stats formatting is not consistent

System details:

Positron and OS details:

Positron Dev Version: 2024.08.0 build 0
Code - OSS Version: 1.91.0
Commit: Unknown
Date: Unknown
Electron: 29.4.0
Chromium: 122.0.6261.156
Node.js: 20.9.0
V8: 12.2.281.27-electron.0
OS: Darwin arm64 23.5.0

Interpreter details:

R 4.4.1

Describe the issue:

The formatting of R datetime / timestamp column summary stats is not consistent.

Steps to reproduce the issue:

1. Clone the qa-example-content repo.
2. Execute library(arrow)
3. Execute arrow100x100 <- read_parquet('/paht/qa-example-content/data-files/100x100/100x100.parquet')
4. Expand columns 13-17 to match the above screenshot.
5. Notice that there are formatting issues where the median value has more precision than the mean, min, and max values in some cases. This results in poor alignment of the column summary stats.

Expected or desired behavior:

Things should look like column 15. The median, mean, min, and max values should line up.

For reference, here's screenshot of Polars displaying the same data.

Were there any error messages in the UI, Output panel, or Developer Tools console?

No.

Reproduce the issue with the qa-example-content repository, the 100x100.parquet file, and R 4.4.1, then inspect the summary-stat display for columns 13–17. Done means the median, mean, minimum, and maximum values use consistent precision and line up like column 15 and the Polars reference.