[MI-1311] Fix currency input issue (rounding, clipping, ...)

.changeset/decimal-currency-input.md

@@ -0,0 +1,7 @@
+---
+'@lambdacurry/medusa-forms': patch
+---
+
+Preserve exact decimal currency digits while typing and editing, without caret jumps or float rounding.
+
+ControlledCurrencyInput uses a precision-safe currency field (no Number()-based formatting), keeps a focused draft for intermediate decimals like `19.`, disables group separators while editing, and stores high-magnitude values as strings when `valueAsNumber` / `setValueAs` would lose IEEE-754 precision.