fix(tests): make allowBuilds in the js pnpm-workspace a mapping instead of list

[TartanLlama]

allowBuilds in test/components/js/pnpm-workspace.yaml is currently a list, but it is specified to be a mapping and the current version throws an error for me when running just build:

Error:   × load configuration
  ╰─▶ Failed to parse pnpm-workspace.yaml at jco/test/components/js/pnpm-workspace.yaml: error: line 3 column 14: unexpected event: expected mapping start
       --> <input>:3:14
        |
      1 | minimumReleaseAge: 10080
      2 | blockExoticSubdeps: true
      3 | allowBuilds: []
        |              ^ unexpected event: expected mapping start
      4 |
      5 | packages:
        |

We could probably also just remove it, whichever.

[vados-cosmonic]

Hey this looks good to me, thanks @TartanLlama -- I'm OK leaving the object in there (not removing it completely) but it looks like CI is unhappy with your commit title... We're somewhat picky about commit titles due to the release automation, but I think you want something like:

fix(tests): make allowBuilds in the js pnpm-workspace a mapping instead of list

(oh and btw the capital Make -> make is important)

See commitlint.config.mjs for more details