docs: clarify that forceEsbuild property is no longer supported - Change wording from 'no longer needed' to 'no longer supported' - More accurate description of the breaking change

Author: just-jeb

MIGRATION.MD

@@ -2,7 +2,7 @@
 
 ## Custom ESBuild builder
 
-1. The `forceEsbuild` property has been removed from the dev-server configuration. This property is no longer needed since the builder now uses `@angular/build` directly, which uses esbuild by default.
+1. The `forceEsbuild` property has been removed from the dev-server configuration. This property is no longer supported since the builder now uses `@angular/build` directly, which uses esbuild by default.
 
    **Before:**
    ```json