fix: retain override values on ConfigProviderImpl.update() (#17424)

[tinker-michaelj]

Cherry-pick #17424

[codecov]

Codecov Report

Attention: Patch coverage is 42.85714% with 4 lines in your changes missing coverage. Please review.

Project coverage is 64.35%. Comparing base (ad53b0c) to head (6d62597).
Report is 1 commits behind head on release/0.58.

Files with missing lines	Patch %	Lines
.../hedera/node/app/workflows/FacilityInitModule.java	0.00%	4 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff               @@
##             release/0.58   #17430   +/-   ##
===============================================
  Coverage           64.35%   64.35%           
- Complexity          20914    20915    +1     
===============================================
  Files                2549     2549           
  Lines               96049    96055    +6     
  Branches            10048    10048           
===============================================
+ Hits                61812    61816    +4     
- Misses              30601    30604    +3     
+ Partials             3636     3635    -1     

Files with missing lines	Coverage Δ
...com/hedera/node/app/config/ConfigProviderImpl.java	93.54% <100.00%> (+0.32%)	⬆️
...n/java/com/hedera/node/app/util/FileUtilities.java	86.95% <ø> (ø)
.../hedera/node/app/workflows/FacilityInitModule.java	28.00% <0.00%> (-1.79%)	⬇️

... and 1 file with indirect coverage changes

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.00% (target: -1.00%)	✅ 42.86%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (ad53b0c)	95812	65256	68.11%
Head commit (6d62597)	95818 (+6)	65259 (+3)	68.11% (+0.00%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#17430)	7	3	42.86%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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