fix: issue calling init from 0.75.0-rc.1 release

When users call the cli through react-native (a deprecated path), it
hard-codes the platform name to 'react-native'. This is an error, and
doing this bypasses all template selection logic.

This excludes setting the platform name to 'react-native', which is
assumed.

packages/cli/src/commands/init/init.ts

@@ -400,7 +400,7 @@ async function createTemplateUri(
   options: Options,
   version: string,
 ): Promise<string> {
-  if (options.platformName) {
+  if (options.platformName && options.platformName !== 'react-native') {
     logger.debug('User has specified an out-of-tree platform, using it');
     return `${options.platformName}@${version}`;
   }