fix(windows-host): ISCC [Code] — don't put {tmp} inside a Pascal comment

ISCC aborted compiling the installer at the web-console [Code] section: a comment
`{ ... {tmp} is auto-cleaned. }` — Pascal `{ }` comments don't nest, so the `}` in
`{tmp}` closed the comment early and `is auto-cleaned. }` parsed as code ("Identifier
expected"). Reword to drop the brace. (All other {app}/{tmp} uses are `;` line-comments
or code strings, which are fine.)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

packaging/windows/punktfunk-host.iss

@@ -267,7 +267,7 @@ begin
   begin
     StopHostServiceAndWait;
 #ifdef WithWeb
-    { Stash the chosen password for web-setup.ps1 (fresh install only); {tmp} is auto-cleaned. }
+    { Stash the chosen password for web-setup.ps1 (fresh install only); the temp copy is auto-cleaned. }
     if FreshWebInstall then
       SaveStringToFile(ExpandConstant('{tmp}\webpw.txt'), Trim(WebPwPage.Values[0]), False);
 #endif