Unignore some ignored test

[ludfjig]

Simplifies our just-file slightly by rewriting and unignoring tests that no longer needs to be ran separately. Reviewing commit-by-commit is probably easiest. Will follow up with another PR that cleans up our just-file to avoid running duplicate tests, which wastes a lot of time in CI currently

[Copilot]

Pull request overview

This PR simplifies the test infrastructure by unignoring and refactoring several tests that no longer need to be run in isolation. The tests are updated to be more robust against concurrent execution and race conditions.

Changes:

• Unignored and simplified four tests: test_trace_trace, create_200_sandboxes (reduced from 1000), test_drop, and execute_on_heap
• Improved test implementations to handle concurrent execution better by using unique sizes, exact mapping checks, and clearer assertions
• Removed unused build_metadata_testing module from log_values.rs

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/tests/rust_guests/simpleguest/src/main.rs	Updated return value for execute_on_heap to match new test expectations
src/hyperlight_host/tests/integration_test.rs	Removed #[ignore] attribute and improved assertions for execute_on_heap test
src/hyperlight_host/src/testing/log_values.rs	Removed unused build_metadata_testing module
src/hyperlight_host/src/sandbox/uninitialized.rs	Removed #[ignore] and refactored test_trace_trace with cleaner helper functions and better documentation
src/hyperlight_host/src/sandbox/initialized_multi_use.rs	Removed #[ignore] and reduced test from 1000 to 200 sandboxes with clearer variable naming
src/hyperlight_host/src/mem/shared_mem.rs	Removed #[ignore] and improved test_drop to use exact mapping checks with unique size to avoid race conditions
Justfile	Removed explicit runs of newly unignored tests from test-isolated, updated comment for execute_on_heap test