Set usePlaceholders to match Go default (#37551)

Closes #33629

Release Notes:

- changed gopls default to match what Go specifies
https://github.com/golang/tools/blob/master/gopls/doc/settings.md#useplaceholders-bool
414d3be437Mitch (a.k.a Voz) committed on 9/9/2025, 7:32:45 PM· committed by GitHubparent0862a0b
1 file changedLine totals unavailable