Skip calc() normalisation in nested theme() calls (#11705)

* add `calc` normalisation test cases using `theme()`

* ignore formatting in some known functions, such as `theme`

* update changelog

src/util/dataTypes.js

@@ -59,6 +59,8 @@ export function normalize(value, isRoot = true) {
  * @returns {string}
  */
 function normalizeMathOperatorSpacing(value) {
+  let preventFormattingInFunctions = ['theme']
+
   return value.replace(/(calc|min|max|clamp)\(.+\)/g, (match) => {
     let result = ''
 
@@ -100,6 +102,11 @@ function normalizeMathOperatorSpacing(value) {
         result += consumeUntil([')', ','])
       }
 
+      // Skip formatting inside known functions
+      else if (preventFormattingInFunctions.some((fn) => peek(fn))) {
+        result += consumeUntil([')'])
+      }
+
       // Handle operators
       else if (
         ['+', '-', '*', '/'].includes(char) &&