fix(developer): pass correct generator options from kmc

Also add some resilience to option usage in kmc-generate; more work may
need to be done here in future.

Fixes: #13110

developer/src/kmc/src/commands/generate.ts

@@ -115,7 +115,7 @@ async function generate(generator: KeymanCompiler, ids: string | string[], comma
   const options = commanderOptionsToGeneratorOptions(id, commanderOptions);
 
   const callbacks = new NodeCompilerCallbacks(options);
-  if(!await doGenerate(callbacks, generator, commanderOptions)) {
+  if(!await doGenerate(callbacks, generator, options)) {
     return await exitProcess(1);
   }
 }