[w3c/permissions] Use embeddedOrigin instead of topLevelOrigin in setPermission (PR #469)

For most permissions, 'origin' is interpreted as the top-level origin. To align with that, 'origin' in the setPermission command should correspond to the top-level (embedding) origin. This change enforces that fact and makes the second origin parameter the embedded (requesting) origin. We also need to change the key generation algorithm to reflect this swap of parameters.


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<a href="https://pr-preview.s3.amazonaws.com/jalonthomas/permissions/pull/469.html" title="Last updated on Oct 1, 2025, 2:53 PM UTC (bb47617)">Preview</a> | <a href="https://pr-preview.s3.amazonaws.com/w3c/permissions/469/a867a0e...jalonthomas:bb47617.html" title="Last updated on Oct 1, 2025, 2:53 PM UTC (bb47617)">Diff</a>
You can view, comment on, or merge this pull request online at:

  https://github.com/w3c/permissions/pull/469

-- Commit Summary --

  * Use embeddedOrigin instead of topLevelOrigin

-- File Changes --

    M index.html (27)

-- Patch Links --

https://github.com/w3c/permissions/pull/469.patch
https://github.com/w3c/permissions/pull/469.diff

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