Fix misspellings flagged by Optional Lint (misspell check)

[Copilot]

The "Optional Lint" CI job was failing due to British English spellings detected by the misspell checker.

Corrected all flagged occurrences across four files:

• olive/cli/model_package.py — behaviour → behavior (×5), recognised → recognized (×1)
• mcp/src/olive_mcp/jobs.py — cancelled → canceled (×2, includes a status string value used in comparisons)
• mcp/src/olive_mcp/tools.py — cancelled → canceled (×6, includes status string values and log messages)
• test/cli/test_model_package.py — honour → honor (×1), recognises → recognizes (×1)

Checklist before requesting a review

• Add unit tests for this change.
• Make sure all tests can pass.
• Update documents if necessary.
• Lint and apply fixes to your code by running lintrunner -a
• Is this a user-facing change? If yes, give a description of this change to be included in the release notes.

(Optional) Issue link

[Copilot]

Pull request overview

This pull request resolves failures in the “Optional Lint” CI job’s misspell check (US locale) by converting a handful of British English spellings to their US equivalents across the CLI packaging code, the MCP server job/status implementation, and related tests/docs.

Changes:

• Updated docstrings/comments in CLI packaging logic and its tests (e.g., behaviour → behavior, recognised → recognized, honour → honor).
• Normalized MCP server cancellation wording to US spelling, including the job status string value (cancelled → canceled) and associated user-facing messages.
• Kept the MCP job lifecycle logic consistent by updating both the status assignment and the status comparison used to avoid overwriting a canceled job’s state.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
olive/cli/model_package.py	Spelling fixes in docstrings/comments within model packaging logic.
mcp/src/olive_mcp/jobs.py	Updates the cancellation status comparison to match the new canceled status string.
mcp/src/olive_mcp/tools.py	Updates cancellation log/message text and returned status payloads to canceled.
test/cli/test_model_package.py	Spelling fixes in test docstrings/comments.