fix(ui5-step-input): prevent false validation error with valuePrecision (#12778)

Previously when users entered whole numbers or numbers with fewer decimals than required by valuePrecision, the component incorrectly showed "Invalid Entry" error even though the value was automatically formatted correctly.

Now integer values will always be formatted with the correct precision via toFixed(), making them valid regardless of how they were entered (e.g., "5" or "5.0" with valuePrecision=2 both become "5.00").

Author: hinzzx

packages/main/src/StepInput.ts

@@ -513,6 +513,13 @@ class StepInput extends UI5Element implements IFormInputElement {
 	}
 
 	get _isValueWithCorrectPrecision() {
+		// check if the value will be displayed with correct precision
+		// _displayValue has special formatting logic
+		if ((this.value === 0) || (Number.isInteger(this.value))) {
+			// integers and zero will be formatted with toFixed, so they're always valid
+			return true;
+		}
+
 		// gets either "." or "," as delimiter which is based on locale, and splits the number by it
 		const delimiter = this.input?.value?.includes(".") ? "." : ",";
 		const numberParts = this.input?.value?.split(delimiter);