feat: /feedback command (bundle Discord Presence 0.24.0)

[bh679]

Summary

Brings the new /feedback command to Dungeon Train by bundling Discord Presence 0.24.0 (jarJar). Any player can type /feedback — in any game mode — to open the feedback survey on demand, and re-submit. Previously the survey only appeared on the death screen (unreachable in creative/spectator).

discordpresence_version 0.22.0 → 0.24.0. Also pulls DP 0.23.0 (advancement message-suffix seam + account-link credential plumbing).

Mod impact

• No DT code change — dependency version bump only. DP is jarJar'd (not a modpack optional_mods include), so no check-relations.py / modpack changes.
• The new command + networking packet ship inside bundled DP (DP-side, already released as v0.24.0).

Test plan

• ./gradlew build — clean; DT jar bundles discordpresence-0.24.0.jar; DT unit tests pass
• DT dev client integration: loads clean, survey active (webhookSet/consent), /feedback registered in a creative world (Gate 2 approved)
• DP v0.24.0 published (GitHub + Modrinth + CurseForge); DT resolves it via the GitHub-release Ivy repo
• (post-merge) optional DT release to ship /feedback to players

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