chore: cache theme value properties, since it is a frequent property (#41031)

## Description
Added caching of theme property value since it is a frequent expression,
it constitutes 20% of all binding expressions for a large customer app.
Expecting a 400ms reduction in LCP for a large customer app.

Fixes #`Issue Number`  
_or_  
Fixes `Issue URL`
> [!WARNING]  
> _If no issue exists, please create an issue first, and check with the
maintainers if the issue is valid._

## Automation

/ok-to-test tags="@tag.All"

### 🔍 Cypress test results
<!-- This is an auto-generated comment: Cypress test results  -->
> [!TIP]
> 🟢 🟢 🟢 All cypress tests have passed! 🎉 🎉 🎉
> Workflow run:
<https://github.com/appsmithorg/appsmith/actions/runs/15880337835>
> Commit: 11fab20fe285aa1b3b59c164179902628d35d97d
> <a
href="https://internal.appsmith.com/app/cypress-dashboard/rundetails-65890b3c81d7400d08fa9ee5?branch=master&workflowId=15880337835&attempt=2"
target="_blank">Cypress dashboard</a>.
> Tags: `@tag.All`
> Spec:
> <hr>Wed, 25 Jun 2025 17:45:37 UTC
<!-- end of auto-generated comment: Cypress test results  -->


## Communication
Should the DevRel and Marketing teams inform users about this change?
- [ ] Yes
- [ ] No


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

## Summary by CodeRabbit

- **New Features**
- Improved performance when evaluating theme-related properties by
introducing caching for repeated values.

- **Chores**
- Added a utility to identify specific theme-related unevaluated values.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

app/client/src/ce/entities/DataTree/utils.ts

@@ -84,3 +84,14 @@ export function isWidgetActionOrJsObject(
 ): entity is ActionEntity | WidgetEntity | JSActionEntity {
   return isWidget(entity) || isAction(entity) || isJSAction(entity);
 }
+
+const THEME_PROPERTIES = new Set([
+  "{{appsmith.theme.fontFamily.appFont}}",
+  "{{appsmith.theme.boxShadow.appBoxShadow}}",
+  "{{appsmith.theme.colors.primaryColor}}",
+  "{{appsmith.theme.borderRadius.appBorderRadius}}",
+]);
+
+export function isThemeUnevaluatedValue(value: string): boolean {
+  return THEME_PROPERTIES.has(value);
+}

app/client/src/workers/common/DataTreeEvaluator/index.ts

@@ -136,7 +136,10 @@ import userLogs from "workers/Evaluation/fns/overrides/console";
 import ExecutionMetaData from "workers/Evaluation/fns/utils/ExecutionMetaData";
 import DependencyMap from "entities/DependencyMap";
 import { DependencyMapUtils } from "entities/DependencyMap/DependencyMapUtils";
-import { isWidgetActionOrJsObject } from "ee/entities/DataTree/utils";
+import {
+  isWidgetActionOrJsObject,
+  isThemeUnevaluatedValue,
+} from "ee/entities/DataTree/utils";
 import DataStore from "workers/Evaluation/dataStore";
 import { updateTreeWithData } from "workers/Evaluation/dataStore/utils";
 import microDiff from "microdiff";
@@ -1178,6 +1181,8 @@ export default class DataTreeEvaluator {
     }
 
     const dependencies = this.dependencyMap.dependencies;
+    // Add a cache for specific appsmith theme properties
+    const themePropertyCache = new Map<string, unknown>();
 
     try {
       for (const fullPropertyPath of evaluationOrder) {
@@ -1266,16 +1271,32 @@ export default class DataTreeEvaluator {
           }
 
           try {
-            evalPropertyValue = this.getDynamicValue(
-              unEvalPropertyValue,
-              contextTree,
-              oldConfigTree,
-              evaluationSubstitutionType,
-              contextData,
-              undefined,
-              fullPropertyPath,
-              evalContextCache,
-            );
+            const themeEvaluatedValue =
+              themePropertyCache.get(unEvalPropertyValue);
+
+            // use the cached value if it exists
+            if (themeEvaluatedValue) {
+              evalPropertyValue = themeEvaluatedValue;
+            } else {
+              evalPropertyValue = this.getDynamicValue(
+                unEvalPropertyValue,
+                contextTree,
+                oldConfigTree,
+                evaluationSubstitutionType,
+                contextData,
+                undefined,
+                fullPropertyPath,
+                evalContextCache,
+              );
+
+              if (
+                evalPropertyValue &&
+                isThemeUnevaluatedValue(unEvalPropertyValue)
+              ) {
+                // we are caching theme properties because its a frequent unevaluated value roughly constitues 20% of all bindings
+                themePropertyCache.set(unEvalPropertyValue, evalPropertyValue);
+              }
+            }
           } catch (error) {
             this.errors.push({
               type: EvalErrorTypes.EVAL_PROPERTY_ERROR,