Filter reserved keywords from WASM REPL autocomplete

[KCarretto]

This change modifies the Interpreter::complete method in eldritch-core/src/interpreter/core.rs to filter out reserved Python keywords from the autocomplete suggestions. Previously, keywords like def, if, True, False, etc., were explicitly added to the candidates list. This logic has been removed, and a filter has been added to exclude any keywords that might be present in the environment (e.g., pass). This results in a cleaner autocomplete experience for the WASM REPL, suggesting only relevant variables and functions. Tests in eldritch-wasm were updated to verify this behavior.

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PR created automatically by Jules for task 16967836529602966544 started by @KCarretto

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[github-actions]

Summary

Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
2725    ±0	2725    ±0	0    ±0	0    ±0	0    ±0	0    ±0	1ms    ±0

Previous Results

Build 🏗️	Result 🧪	Tests 📝	Passed ✅	Failed ❌	Skipped ⏭️	Other ❓	Flaky 🍂	Duration ⏱️
#1377	✅	2725	2725	0	0	0	0	44.1s

Insights

Average Tests per Run	Total Flaky Tests	Total Failed	Slowest Test (p95)
2725	0	0	5.6s

Slowest Tests

Test 📝	Results 📊	Duration (avg) ⏱️	Duration (p95) ⏱️
TestDockerExecutor_Build_ContextCancellation	1	5.6s	5.6s
eldritch-libsys: std::dll_inject_impl::tests::test_dll_inject_simple	1	5.1s	5.1s
TestInteractiveShell	1	5.1s	5.1s
TestOtherStreamOutput	1	5.0s	5.0s
imix::bin/imix: install::tests::test_install_execution	3	1.6s	4.6s
imix::bin/imix: install::tests::test_install_execution	3	1.6s	4.6s
imix::bin/imix: install::tests::test_install_execution	3	1.6s	4.6s
imix::bin/imix: tests::task_tests::test_task_streaming_output	3	3.0s	3.1s
imix::bin/imix: tests::task_tests::test_task_streaming_output	3	3.0s	3.1s
imix::bin/imix: tests::task_tests::test_task_streaming_output	3	3.0s	3.1s

_{🎉 No failed tests in this run. | 🍂 No flaky tests in this run.}

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