chore: changeset for analytics measure-currency chain

Author: os-zhuang

.changeset/analytics-measure-currency-chain.md

@@ -0,0 +1,11 @@
+---
+"@objectstack/service-analytics": minor
+---
+
+Resolve a monetary measure's display currency via the field→tenant chain.
+
+A dataset measure-currency now resolves through: explicit measure `currency` →
+source-field `currencyConfig.defaultCurrency` → tenant default (`ctx.currency`).
+A measure is monetary iff it declares a currency or aggregates a `currency`-type
+field, so count/avg-of-number measures never receive a code. Wires a
+`measureCurrency` field-metadata resolver from the data engine's object schema.