fix(core): disable daemon in postinstall (#27415)

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## Current Behavior
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Daemon is stopped.. but then started in the postinstall process. The
results might be premature and cause issues for subsequent commands.

## Expected Behavior
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Daemon is stopped... and disabled in postinstall process. This won't
cause issues for subsequent commands.

## Related Issue(s)
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merged. -->

Fixes #

packages/nx/bin/post-install.ts

@@ -27,6 +27,8 @@ import { logger } from '../src/utils/logger';
       if (isNxCloudUsed(readNxJson())) {
         tasks.push(verifyOrUpdateNxCloudClient(getCloudOptions()));
       }
+
+      process.env.NX_DAEMON = 'false';
       await Promise.all(
         tasks.map((promise) => {
           return promise.catch((e) => {