Add "Trigger " prefix to name in dogfood triggers

[Copilot]

Dogfood trigger workflows lacked a distinguishing prefix in their name field, making them harder to identify in the GitHub Actions UI relative to the compiled lock workflows.

Changes

• scripts/dogfood.sh — Extended the sed pipeline with s|^name: |name: Trigger | so all future syncs automatically prefix the workflow name.
• .github/workflows/trigger-*.yml (31 files) — Regenerated via scripts/dogfood.sh to apply the prefix. Also picks up a previously out-of-sync trigger-update-pr-body.yml (dropped stale issues: read permission, updated if: condition to match current source).
• trigger-downstream-users.yml — Manually updated (no backing example.yml).

Before / After:

# Before
name: Text Beautifier

# After
name: Trigger Text Beautifier

Original prompt

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This section details on the original issue you should resolve

<issue_title>Add "Trigger " prefix to name in our dogfood triggers</issue_title>
<issue_description></issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Add "Trigger " prefix to name in our dogfood triggers #301

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