Fix Minion Pact damage applying without nearby minions

[unrealdreamz]

Summary

• Gate Minion Pact I/II's more-damage stat behind the existing "# of Minions in your Presence" configuration.
• Keep both exported support data and generated skill data aligned.
• Add a regression covering Lightning Arrow with Minion Pact before and after a minion-in-presence count is configured.

Root Cause

Minion Pact's data description says it only takes effect when there is a minion with enough life to drain, but the stat map emitted an unconditional Damage MORE modifier. As a result, any supported player skill received Minion Pact damage even when the build had no minion state at all.

Fix

The support stat now carries a MultiplierThreshold on MinionPresenceCount >= 1. This reuses the existing configuration path for nearby minions instead of adding a new UI surface or inventing broader minion simulation.

Validation

• gh pr list --repo PathOfBuildingCommunity/PathOfBuilding-PoE2 --state open -S '1724' --json number,title,headRefName,author,url --jq '.' → []
• gh pr list --repo PathOfBuildingCommunity/PathOfBuilding-PoE2 --state open -S '"Minion Pact"' --json number,title,headRefName,author,url --jq '.' → []
• git diff --check → pass (CRLF warning only)
• git diff --cached --check → pass (CRLF warning only)
• git show --check --stat --oneline HEAD → pass

I did not run the containerized Busted suite locally; this machine is currently being kept free of extra containers/windows. The included spec is targeted at the changed support stat path.

Risk / Rollback

Risk is localized to Minion Pact I/II. Builds using Minion Pact now need an explicit minion-in-presence count for its conditional damage to apply. Rollback is a revert of this commit.

Fixes #1724

[LocalIdentity]

Relies on logic from #1835