Account ID is not loaded when setting up cron triggers

[lujjjh]

🐛 Bug report

Describe the bug

After I configured triggers.crons in the wrangler.toml, wrangler publish failed with the messages below:

✨  Build completed successfully!
Error: Something went wrong with the request to Cloudflare...
Could not route to /accounts/workers/scripts/***/schedules, perhaps your object identifier is invalid? [API code: 7003]
No route for that URI [API code: 7000]

Note that :account_id is missing in the API URL.

I went through the code and discovered that account_id is not loaded when constructing the DeployTarget::Schedule.

https://github.com/cloudflare/wrangler/blob/d2f49e2d800c72160963952314f35ac0e72644f3/src/settings/toml/manifest.rs#L277

Reproduce the bug

A list of steps to reproduce the bug.

1. In any wrangler project, add triggers.crons = ["*/5 * * * *"] to the wrangler.toml.
2. Run wrangler publish without any CF_* environment variables.

Expected behavior

Cron triggers are configured without errors.

Environment and versions

Fill out the following information about your environment.

• operating system: Ubuntu 20.04
• output of wrangler -V: wrangler 1.19.0
• output of node -v: v16.6.1
• content of wrangler.toml:

name = "***"
type = "javascript"
workers_dev = true

[triggers]
crons = ["*/5 * * * *"]