Tools (Compress most visibly) hold an axios cancel token but only fire it
from an explicit cancel button. Navigating away or switching tools
mid-operation unmounts the tool component without cancelling, so the
request stays pending in the browser with no way for the user to stop it.
Wire the operation's existing cancelOperation into useBaseTool's unmount
cleanup, guarded on isLoading so only genuinely in-flight operations are
cancelled (keeping normal unmounts and React strict-mode dev remounts a
no-op). Because every tool consumes useBaseTool, this covers the whole
tool surface, not just Compress.
Generated-By: PostHog Code
Task-Id: a4bc9efb-c047-4373-b007-72425db5e40a
