I added a test that asserts malformed profiling operations do not throw and that errors/warnings are logged

[apoorvgarewal07]

1. Builds minimal fake profiling data with a valid initial snapshot.
2. Injects malformed operations (duplicate add, remove of missing node, remove root, and an unsupported op).
3. Asserts that getCommitTree does not throw and that console.error / console.warn were called.

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