fix(@angular-devkit/build-angular): fix support of Safari TP versions

Fix issue-related to the support of Safari TP versions. This issue was accidentally introduced in a0f9db8

Fixes #24639

Author: ricardochl

packages/angular_devkit/build_angular/src/utils/esbuild-targets.ts

@@ -38,7 +38,7 @@ export function transformSupportedBrowsersToTargets(supportedBrowsers: string[])
     [version] = version.split('-');
 
     if (esBuildSupportedBrowsers.has(browserName)) {
-      if (browserName === 'safari' && version === 'TP') {
+      if (browserName === 'safari' && version === 'tp') {
         // esbuild only supports numeric versions so `TP` is converted to a high number (999) since
         // a Technology Preview (TP) of Safari is assumed to support all currently known features.
         version = '999';