[CI] DefaultJdkTrustConfigTests testGetSystemTrustStoreWithNoSystemProperties failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic #9199 / openjdk21_checkpart1_java-fips-matrix
• elasticsearch-periodic #9192 / openjdk21_checkpart1_java-fips-matrix
• elasticsearch-periodic #9185 / openjdk21_checkpart1_java-fips-matrix
• elasticsearch-periodic #9178 / openjdk21_checkpart1_java-fips-matrix
• elasticsearch-periodic #9171 / openjdk21_checkpart1_java-fips-matrix
• elasticsearch-periodic #9164 / openjdk21_checkpart1_java-fips-matrix
• elasticsearch-periodic #9157 / openjdk21_checkpart1_java-fips-matrix
• elasticsearch-periodic #9150 / openjdk21_checkpart1_java-fips-matrix
• elasticsearch-periodic #9142 / openjdk21_checkpart1_java-fips-matrix
• elasticsearch-periodic #9135 / openjdk21_checkpart1_java-fips-matrix

Reproduction Line:

./gradlew ":libs:ssl-config:test" --tests "org.elasticsearch.common.ssl.DefaultJdkTrustConfigTests.testGetNonPKCS11TrustStoreWithPasswordSet" -Dtests.seed=99F158125760A05A -Dtests.locale=uz-Arab -Dtests.timezone=America/Godthab -Druntime.java=21 -Dtests.fips.enabled=true

Applicable branches:
9.1

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: 
Expected: not an empty array
     but: was []

Issue Reasons:

• [9.1] 13 consecutive failures in step openjdk21_checkpart1_java-fips-matrix
• [9.1] 13 failures in test testGetSystemTrustStoreWithNoSystemProperties (3.6% fail rate in 358 executions)
• [9.1] 13 failures in step openjdk21_checkpart1_java-fips-matrix (100.0% fail rate in 13 executions)
• [9.1] 13 failures in pipeline elasticsearch-periodic (100.0% fail rate in 13 executions)

Note:
This issue was created using new test triage automation. Please report issues or feedback to es-delivery.

[elasticsearchmachine]

Pinging @elastic/es-security (Team:Security)

[n1v0lg]

#130616 just missing backports

[elasticsearchmachine]

Pinging @elastic/es-core-infra (Team:Core/Infra)