Added extract_if and get_disjoint_mut

[MitchellBerend]

This pr adds 2 methods on DefaultHashMap to bring it up to rust version 1.88

Edit: This is blocked until the image used in ci cuts a new release that includes rust 1.88, It is stuck on 1.87 now.

[codecov]

Codecov Report

Attention: Patch coverage is 15.38462% with 11 lines in your changes missing coverage. Please review.

Project coverage is 96.30%. Comparing base (6ae1b8c) to head (a583ec6).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/default_hashmap.rs	8.33%	11 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #25      +/-   ##
==========================================
- Coverage   99.67%   96.30%   -3.37%     
==========================================
  Files           2        2              
  Lines         309      298      -11     
==========================================
- Hits          308      287      -21     
- Misses          1       11      +10     

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