fix: app and services to stop querying the platform for the roster

[MiroslavGatsanoga]

Description:

Remove Platform.getRoster() calls from Services code.

Related issue(s):

Fixes #16721

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.02% (target: -1.00%)	✅ 100.00%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (b17a761)	98558	71831	72.88%
Head commit (d0d18f7)	98559 (+1)	71847 (+16)	72.90% (+0.02%)

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 (#16771)	6	6	100.00%

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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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.95%. Comparing base (b17a761) to head (d0d18f7).
Report is 18 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #16771      +/-   ##
============================================
+ Coverage     68.93%   68.95%   +0.01%     
- Complexity    22853    22861       +8     
============================================
  Files          2630     2630              
  Lines         98775    98776       +1     
  Branches      10256    10256              
============================================
+ Hits          68091    68107      +16     
+ Misses        26792    26777      -15     
  Partials       3892     3892              

Files with missing lines	Coverage Δ
...-app/src/main/java/com/hedera/node/app/Hedera.java	50.36% <100.00%> (+0.24%)	⬆️
...a/com/hedera/node/app/platform/PlatformModule.java	100.00% <ø> (ø)
...edera/node/app/throttle/ThrottleServiceModule.java	100.00% <100.00%> (ø)
...app/workflows/standalone/TransactionExecutors.java	91.20% <100.00%> (ø)

... and 11 files with indirect coverage changes

[edward-swirldslabs]

so much cleaner to review.

[tinker-michaelj]

LGTM, tyvm @MiroslavGatsanoga !