[jdk21u-dev] RFR: 8312194: test/hotspot/jtreg/applications/ctw/modules/jdk_crypto_ec.java cannot handle empty modules

[Andrew Lu]

I backport this for parity with 21.0.3-oracle.

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Commit messages:
 - Backport e7c83ea948f8b2cd7caf7e59d3cf6b087807dba7

Changes: https://git.openjdk.org/jdk21u-dev/pull/590/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=590&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8312194
  Stats: 38 lines in 1 file changed: 0 ins; 38 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/590.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/590/head:pull/590

PR: https://git.openjdk.org/jdk21u-dev/pull/590