Make field bale scans cooperative

[WizardlyPayload]

Summary

• Routes the default field collector path through cooperative coroutine steps so bale-heavy saves do not scan every bale in one frame.
• Reuses bale position and parcel matching results across per-field counts and bale inventory totals.
• Adds a Jest guard that verifies the cooperative bale scan shape stays in place.

Testing

• luac -p ../../FS25_FarmDashboard_Mod/FS25_FarmDashboard_Mod/src/collectors/FieldDataCollector.lua
• npm test -- fieldBaleScanCooperative.test.js
• npm test
• Lua runtime harness with 3,500 fake bales completed over 71 collector steps.