RFR: 8353581: Support for `import module` in JShell's code completion

[Jan Lahoda]

Adding support for `import module ` to JShell's code completion.

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Commit messages:
 - Fixing typo in test.
 - 8353581: Support for `import module` in JShell's code completion

Changes: https://git.openjdk.org/jdk/pull/24442/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24442&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8353581
  Stats: 96 lines in 2 files changed: 74 ins; 0 del; 22 mod
  Patch: https://git.openjdk.org/jdk/pull/24442.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24442/head:pull/24442

PR: https://git.openjdk.org/jdk/pull/24442