Fix accounts REST API with DER encoded public key

[steven-sheehy]

Detailed description:

Which issue(s) this PR fixes:
Fixes #2025

Special notes for your reviewer:

Checklist

• Documentation added
• Tests updated

[codecov]

Codecov Report

Merging #2026 (21a87e6) into master (126751e) will decrease coverage by 7.64%.
The diff coverage is 88.15%.

❗ Current head 21a87e6 differs from pull request most recent head 78494d1. Consider uploading reports for the commit 78494d1 to get more accurate results

@@             Coverage Diff              @@
##             master    #2026      +/-   ##
============================================
- Coverage     87.05%   79.40%   -7.65%     
- Complexity     1744     1917     +173     
============================================
  Files           315      377      +62     
  Lines          7731     9278    +1547     
  Branches        740      870     +130     
============================================
+ Hits           6730     7367     +637     
- Misses          772     1650     +878     
- Partials        229      261      +32     

Impacted Files	Coverage Δ
...sus/ConsensusSubmitMessageTransactionSupplier.java	0.00% <0.00%> (ø)
...ra/mirror/monitor/config/MonitorConfiguration.java	0.00% <0.00%> (ø)
...or/monitor/expression/ExpressionConverterImpl.java	88.88% <0.00%> (ø)
...edera/mirror/monitor/publish/PublishException.java	0.00% <0.00%> (ø)
.../hedera/mirror/monitor/publish/PublishMetrics.java	0.00% <0.00%> (ø)
...a/mirror/monitor/publish/TransactionPublisher.java	1.09% <0.00%> (-0.04%)	⬇️
...nitor/subscribe/rest/RestSubscriberProperties.java	83.33% <ø> (ø)
.../app/services/construction/construction_service.go	80.85% <ø> (-5.92%)	⬇️
...or-rosetta/app/services/mempool/mempool_service.go	100.00% <ø> (ø)
...or-rosetta/app/services/network/network_service.go	100.00% <ø> (ø)
... and 171 more

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[Nana-EC]

One minor request, looks good otherwise

[sonarcloud]

SonarCloud Quality Gate failed.

0 Bugs
0 Vulnerabilities
0 Security Hotspots
5 Code Smells

0.0% Coverage
3.3% Duplication

[xin-hedera]

LGTM

[Nana-EC]

LGTM