Fix serena-mcp-server test.sh entrypoint override for runtime verification

[Copilot]

The Serena MCP server test suite was failing to verify language runtimes (Python, Java, Node.js, Go) because the container's ENTRYPOINT caused commands to be interpreted as arguments to serena-mcp-server rather than executed directly.

Changes

• Test 4 (Language Runtimes): Added --entrypoint flag to override container entrypoint for direct command execution

  • Python: --entrypoint python3
  • Java: --entrypoint java
  • Node.js: --entrypoint node
  • Go: --entrypoint go

• Test 5 (Language Servers): Updated shell command checks to use --entrypoint sh for proper execution context

Before/After

# Before - fails with "Got unexpected extra argument (go)"
docker run --rm "$CONTAINER_IMAGE" go version

# After - executes go command directly
docker run --rm --entrypoint go "$CONTAINER_IMAGE" version

All language runtime and language server verification tests now execute correctly.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Smoke Copilot - Issue Group</issue_title>
<issue_description># Smoke Copilot

Parent issue for grouping related issues from Smoke Copilot.

Sub-issues are automatically linked below (max 64 per parent).
</issue_description>

<agent_instructions>Please try to understand why this test is failing

✅ bash
Test go command availability

$ echo "Testing go command in serena context" && which go && go version

Testing go command in serena context
<exited with exit code 1></agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes Smoke Copilot - Issue Group #340

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