v1.17: [anza migration] fix: use the correct log filter for non-unix (backport of #245)

[mergify]

Problem

I removed the filter variable in #223, but I didn't notice that the non-Unix code was also using it 😞

Summary of Changes

use the new public const in the solana_logger

agave/logger/src/lib.rs

Line 13 in 51dc7e6

pub const DEFAULT_FILTER: &str = "solana=info,agave=info";

---

This is an automatic backport of pull request #245 done by Mergify.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.6%. Comparing base (af153cb) to head (4326d16).

Additional details and impacted files

@@            Coverage Diff            @@
##            v1.17     #287     +/-   ##
=========================================
- Coverage    81.6%    81.6%   -0.1%     
=========================================
  Files         806      806             
  Lines      219224   219224             
=========================================
- Hits       178989   178922     -67     
- Misses      40235    40302     +67