fix: hide ClaudeQuickToggles when creating a new provider

The quick toggles (hide AI attribution, extended thinking, teammates
mode) patch the live config of the currently active provider, which
is incorrect during provider creation. Only show them in edit mode.

src/components/providers/forms/ProviderForm.tsx

@@ -1496,6 +1496,7 @@ export function ProviderForm({
               <Label htmlFor="settingsConfig">
                 {t("claudeConfig.configLabel")}
               </Label>
+              {isEditMode && (
                 <ClaudeQuickToggles
                   onPatchApplied={(patch) => {
                     try {
@@ -1512,6 +1513,7 @@ export function ProviderForm({
                     }
                   }}
                 />
+              )}
               <JsonEditor
                 value={form.watch("settingsConfig")}
                 onChange={(value) => form.setValue("settingsConfig", value)}