fix(emcn): ChipSelect trigger hugs its content (w-fit)

In a stacked form layout the trigger was stretched by align-items: stretch,
leaving an empty gap to the right of the value. Add w-fit so the chip sizes to
its content (a compact pill) everywhere; fullWidth form selects are unaffected.

Author: waleedlatif1

apps/sim/components/emcn/components/chip-select/chip-select.tsx

@@ -212,7 +212,7 @@ export function ChipSelect({
           aria-label={ariaLabel}
           className={cn(
             chipVariants({ variant: 'filled', flush: true, fullWidth }),
-            fullWidth ? 'w-full justify-between' : 'max-w-[240px]',
+            fullWidth ? 'w-full justify-between' : 'w-fit max-w-[240px]',
             className
           )}
         >