Fix clang-tidy exit code handling in format.ps1

clang-tidy -fix uses exit code 1 to signal that fixes were applied, not a failure. The previous check treated any non-zero exit as a hard error, causing format.ps1 to abort whenever clang-tidy successfully auto-fixed source files. Only exit codes other than 0 or 1 now count as failures.

Author: python-processing-unit

format.ps1

@@ -125,8 +125,9 @@ try {
         $headerFilter = "(src|ext|lib|tests)/"
         $tidyArgs += @('-quiet', '-fix', '-fix-errors', '-fix-notes', $clangTidyFormatArg, "-header-filter=$headerFilter", $file)
         $tidyOutput = & $clangTidy.Path @tidyArgs 2>&1
+        $tidyExitCode = $LASTEXITCODE
 
-        if ($LASTEXITCODE -ne 0) {
+        if ($tidyExitCode -ne 0 -and $tidyExitCode -ne 1) {
             $lintFixFailures += [pscustomobject]@{
                 File = $file
                 Output = (($tidyOutput | ForEach-Object { $_.ToString() }) -join [Environment]::NewLine)