Bundle installation performance improvements

[henrymercer]

Make some performance improvements to bundle installation:

• Only stream the download and extraction of bundles on Linux.
• Only pass the archive to tar via stdin when we're streaming the download and extraction.
• Bump the high water mark when streaming the download and extraction of the bundle to 16 MB to hopefully reduce context switching.

Merge / deployment checklist

• Confirm this change is backwards compatible with existing workflows.
• Confirm the readme has been updated if necessary.
• Confirm the changelog has been updated if necessary.

[aeisenberg]

Seems reasonable. Do you have an idea how much time is being saved?

[henrymercer]

Good question:

• Passing the archive via stdin seems to slow things down on macOS and Windows — on macOS from ~23s to ~28s, on Windows it is difficult to get a precise measurement since we only use zstd when explicitly specified.
• Streaming on macOS (~20s) is faster than passing the archive via stdin (~28s), but has bad p95 performance (several minutes), so it is more reliable to download in full and pass the file to tar (~23s).
• The high water mark I didn't observe anything over a small number of testing runs, but will see if there's a difference at larger scale.