Updated this to explicitly watch compile asset paths too:

• compile.include / --include roots are registered with the watcher in addition to graph modules.
• --icon is resolved relative to the compile cwd and registered with the watcher as well.
• Added unit coverage for include/icon watch path collection.
• Extended the watcher integration test to mutate a raw included file and verify the rebuilt executable embeds the new contents.

Local verification:

• cargo test -p deno --lib compile_watch passed
• cargo test --test integration compile_watch_test passed before this follow-up; rerunning after this follow-up hit local disk exhaustion during relinking (No space left on device), before the test ran.

CI note: the remaining failure is in test node_compat (1/3) debug linux-x86_64, specifically node_compat::parallel::test-dns-resolver-max-timeout.js. The log shows a timing-sensitive assertion failure after retries:

timeout1: 501, timeout2: 502
assert.strictEqual(timeout1 > timeout2, true);

This is unrelated to deno compile --watch and the other checks, including WPT and the compile/watch-relevant integration suites, passed. I attempted to rerun the failed job, but this gh version does not support targeted rerun flags here and the REST rerun-failed-jobs endpoint returned HTTP 403 for this token.